View source for MGR-1 Honest John

{{Use dmy dates|date=April 2017}}
{{Refimprove|date=May 2008}}
{{infobox weapon
| name               = MGR-1 Honest John
| image              = File:Een International M139D 5-tons 6x6-lanceerauto, met een Honest John-raket (762 mm, M289) van 19 Afdeling veldartillerie (2155 046863).jpg
| image_size         = 300
| alt                =
| caption            = MGR-1A (M31 series) "Honest John" rocket on the M386 transporter/launcher truck of the [[Royal Netherlands Army]]
| origin             = United States
| type               = Nuclear-capable [[surface-to-surface rocket]]
<!-- Type selection -->
| is_ranged          = 
| is_bladed          = 
| is_explosive       = 
| is_artillery       = 
| is_vehicle         = 
| is_missile         = yes
| is_UK              = 
<!-- Service history -->
| service            = 1953–91
| used_by            = Belgium, Canada, Denmark, France, Germany, Greece, Italy, Netherlands, Norway, South Korea, Taiwan, Turkey, UK, and US
| wars               = Cold War<!-- Production history -->
| designer           = 
| design_date        = 
| manufacturer       = [[Douglas Aircraft Company]]
| unit_cost          = 
| production_date    = 
| number             = 7000+
| variants           = MGR-1A, MGR-1B, MGR-1C
<!-- General specifications -->
| spec_label         = MGR-1A<ref name="Astronautix">{{cite web
 |url=http://www.astronautix.com/lvs/hontjohn.htm
 |archive-url=https://web.archive.org/web/20041011052933/http://www.astronautix.com/lvs/hontjohn.htm
 |url-status=dead
 |archive-date=2004-10-11
 |title=Honest John
 |date=2003
 |website=Encyclopedia Astronautica
 |publisher=Mark Wade
 |access-date=2019-12-19
 |quote= Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!}}</ref>
| weight             = {{convert|2640|kg|lb|abbr=on|order=flip}}
| length             = {{convert|8.30|m|ftin|abbr=on|order=flip}}
<!--| part_length        = {{convert|501.5|cm|in|abbr=on|order=flip}} can't find a source for this -->
| width              = 
| height             = 
| diameter           = {{convert|30|in|mm}}
| crew               = 
| passengers         =
<!-- Ranged weapon specifications --> 
| cartridge          = 
| cartridge_weight   = 
| caliber            = 
| barrels            = 
| action             = 
| rate               = 
| velocity           = {{convert|123|m/s|ft/s|order=flip}}
| range              = {{convert|123|m|yd|order=flip}}
| max_range          = 
| feed               = 
| sights             = 
<!-- Artillery specifications -->
| breech             = 
| recoil             = 
| carriage           = 
| elevation          = 
| traverse           = 
<!-- Bladed weapon specifications --> 
| blade_type         = 
| hilt_type          = 
| sheath_type        = 
| head_type          = 
| haft_type          = 
<!-- Explosive specifications --> 
| filling            = 
| filling_weight     = 
| detonation         = 
| yield              = 
<!-- Vehicle/missile specifications -->
| armour             = 
| primary_armament   = W-7 (20 kT), later W-31 (2-40 kT), nuclear fission; or 680 kg (1500 lb) conventional HE
| secondary_armament = 
| engine             = Hercules M6 solid-fueled rocket
| engine_power       = {{convert|441|kN|abbr=on|order=flip}}
| pw_ratio           = 
| payload_capacity   = 
| transmission       = 
| suspension         = 
| clearance          = 
| fuel_capacity      = 
| vehicle_range      = {{convert|5.5|-|24.8|km|abbr=on|order=flip}}
| speed              = Mach 2.3
| guidance           = 
| steering           = 
<!-- Missiles only -->
| wingspan           = {{convert|2.77|m|ftin|abbr=on|order=flip}}
| propellant         = Double base solid propellant<ref name="Solid">{{cite web
 |url= http://www.astronautix.com/s/solid.html
 |archive-url= https://web.archive.org/web/20160815174909/http://www.astronautix.com/s/solid.html
 |url-status= dead
 |archive-date= 15 August 2016
 |title=Solid
 |date=2019
 |website=Encyclopedia Astronautica
 |publisher=Mark Wade
 |access-date=2019-12-20
 |quote=The X-201 [...] was the forerunner of an entire family of related propulsion units that served as boosters for the Nike, Terrier, Talos, and Honest John missiles.}}</ref>
| ceiling            = {{convert|9|km|ft|abbr=on|order=flip}}+
| altitude           = 
| depth              = 
| boost              = 
| accuracy           = 
| launch_platform    = 
| transport          =
}}

The '''MGR-1 Honest John''' rocket was the first [[nuclear weapon|nuclear]]-capable [[surface-to-surface rocket]] in the United States arsenal.<ref group="notes" >The first nuclear-authorized ''guided'' missile was the [[MGM-5 Corporal]].</ref> Originally designated '''Artillery Rocket XM31''', the first unit was tested on 29 June 1951, with the first production rounds delivered in January 1953. Its designation was changed to '''M31''' in September 1953. The first Army units received their rockets by year's end and Honest John battalions were deployed in Europe in early 1954. Alternatively, the rocket was capable of carrying an ordinary high-explosive warhead weighing {{convert|1500|lb}}.

==History and development==
[[File:MGR-1 Honest John 02.jpg|left|thumb|Honest John test launch]]
Developed at [[Redstone Arsenal]], Alabama, the Honest John was a large but simple [[Vertical stabilizer|fin-stabilized]], [[Rocket artillery|unguided artillery rocket]] weighing {{convert|5820|lb}} in its initial M31 nuclear-armed version. Mounted on the back of a truck, the rocket was aimed in much the same way as a cannon and then fired up an elevated ramp, igniting four small spin rockets as it cleared the end of the ramp. The M31 had a range of {{convert|15.4|mi}} with a 20 kiloton nuclear warhead and was also capable of carrying a {{convert|1500|lb|adj=on}} conventional warhead.{{Citation needed|date=February 2025}}
[[File:"It's no secret we're in the 'missile business' to stay..." 1958 Douglas Aircraft Company ad detail, from- The Big T 1958 (page 184 crop).jpg|left|thumb|"It's no secret we're in the 'missile business' to stay..." Douglas Aircraft Company ad in the California Institute of Technology 1958 yearbook]]
The M31 system included a truck-mounted, unguided, solid-fueled rocket transported in three separate parts. The Honest John was assembled in the field before launch, mounted on an M289 launcher, and aimed and fired in about 5 minutes. The rocket was originally outfitted with a [[Mark 7 nuclear bomb|W7]] nuclear warhead, with a [[variable yield]] of up to {{convert|20|ktonTNT|lk=on}}; in 1959, a [[W31]] warhead with three variants was deployed with yields of 2, 10 or 30 kt (8.4, 41.8 or 125.5 TJ). There was a W31 variant of {{convert|20|ktonTNT|abbr=on}} used exclusively for the [[Nike Hercules]] anti-aircraft system. The M31 had a range between {{convert|5.5|and|24.8|km|abbr=on|order=flip}}.{{Citation needed|date=February 2025}}

Early tests exhibited more scatter on target than was acceptable when carrying conventional payloads. Development of an upgraded Honest John, M50, was undertaken to improve accuracy and extend range. The size of the fins was greatly reduced to eliminate [[Weathervane effect|weathercocking]]. Increased spin was applied to restore the positive stability margin that was lost when fin size was reduced. The improved M50, with the smaller fins and more "rifling", had a maximum range of 30+ miles with a scatter on target of only {{convert|250|yd}}, demonstrating an accuracy approaching that of tube artillery. The Honest John was manufactured by the [[Douglas Aircraft Company]] of Santa Monica, California.<ref>Gibson, ''Nuclear Weapons of the United States'', pp. 177–179, 1996</ref>[[File:Demonstration cluster bomb.jpg|right|thumb|Honest John warhead cutaway, showing [[M134 bomblet|M134]] [[sarin]] bomblets (photo c. 1960)]]

In the 1960s, [[sarin]] nerve gas [[cluster munition]]s were also available, designed to be interchangeable for use with either the Honest John or [[MGM-5 Corporal]]. Initially the M79 (E19R1) GB cluster warhead, containing 356 M134 (E130R1) bomblets for the M31A1C Honest John. The production model was the M190 (E19R2) GB cluster warhead, containing 356 [[M139 bomblet|M139]] (E130R2) bomblets when the M31A1C was phased out in favor of the XM50 Honest John. Under nominal conditions it had a mean area of effect of 0.9 square kilometers.<ref>Kirby, Reid, "The CB Battlefield Legacy", ''[[Army Chemical Review]]'' July–December 2006, pp. 25 – 29. [https://web.archive.org/web/20150102220337/http://www.wood.army.mil/chmdsd/images/pdfs/Jul-Dec%202006/Kirby3col.pdf]</ref>

== Variants ==
The two basic versions of Honest John were: 
* '''MGR-1A''' (M31) was {{convert|8.30|m|ftin|abbr=on|order=flip}} long, had an engine diameter of {{convert|22+7/8|in|mm|abbr=on}}, a warhead diameter of {{convert|30|in|mm|abbr=on}}, a fin span of {{convert|2.77|m|ftin|abbr=on|order=flip}}, weighed {{convert|2640|kg|lb|abbr=on|order=flip}} (nuclear), and had a range of {{convert|5.5|-|24.8|km|abbr=on|order=flip}}. The [[Hercules Inc.|Hercules Powder Company]] M6 solid-fueled rocket motor was {{convert|16|ft|5+7/16|in|m}} long, weighed {{convert|3937|lb}}, and had {{convert|441|kN|abbr=on|order=flip}} thrust.<ref group="notes"> {{convert|90,325|lbf|kN|abbr=on}} according to {{cite web
 |url= http://www.astronautix.com/s/solid.html
 |archive-url= https://web.archive.org/web/20160815174909/http://www.astronautix.com/s/solid.html
 |url-status= dead
 |archive-date= 15 August 2016
 |title=Solid
 |date=2019
 |website=Encyclopedia Astronautica
 |publisher=Mark Wade
 |access-date=2019-12-20
 |quote=The X-201 [...] was the forerunner of an entire family of related propulsion units that served as boosters for the Nike, Terrier, Talos, and Honest John missiles.}}</ref><ref name="Astronautix"/><ref name="Bedard">{{cite web 
 |url=http://www.friends-partners.org/mwade/articles/doulants.htm
 |title=Double Base Solid Propellants
 |last=Bedard
 |first=Andre
 |date=2001
 |publisher=Mark Wade
 |access-date=2019-12-20
 |quote=Double-base solid propellants consist mainly of fibrous nitro-cellulose and a gelatiniser, or plasticiser, such as nitro-glycerine or a similar compound (ethylene glycol dinitrate), each containing oxygen and fuel in the same compound.}}</ref>

* '''MGR-1B''' (M50) was {{convert|7.92|m|ftin|abbr=on|order=flip}} long, had an engine diameter of {{convert|22.8|in|mm}}, a warhead diameter of {{convert|30|in|mm}}, a fin span of {{convert|1.37|m|ftin|abbr=on|order=flip}}, weighed {{convert| 1960 |kg|lb|abbr=on|order=flip}} (nuclear), and had a maximum range of {{convert|48|km|abbr=on|order=flip}}, practically twice that of the M31. An improved propellant formulation gave the rocket motor {{convert|666|kN|abbr=on|order=flip}} thrust.<ref name="Astronautix"/>

== Production and deployment ==
[[File:Een International M139D 5-tons 6x6-lanceerauto met een Honest John-raket, een een ongeleide raket tegen gronddoelen, met een maximum bereik van ongeveer 35 km (2044 061252).jpg|thumb|right|US Army launcher vehicle based on the M139D 5-ton truck]]
Production of the MGR-1 variants finished in 1965, with a total production run of more than 7,000 rockets. The Honest John's bulbous nose and distinctive truck-mounted launch ramp made it an easily recognized symbol of the Cold War at army bases worldwide and National Guard armories in the U.S.. Even though it was unguided and the first U.S. nuclear ballistic missile, it had a longer service life than all other U.S. ballistic missiles except the [[LGM-30 Minuteman|Minuteman]] system. The system was replaced with the [[MGM-52 Lance]] missile in 1973, but was deployed with the National Guard units in the United States as late as 1983. Conventionally armed Honest Johns remained in the arsenals of Greece, Turkey and South Korea until at least the late 1990s.{{Citation needed|date=February 2025}}

By the time the last Honest Johns were withdrawn from Europe in the late 1980s (and replaced by the [[M-26_artillery_rocket|unguided M-26 artillery rocket]]), the rocket had served with the military forces of Belgium, Britain, Canada, Denmark (non-nuclear), France, Germany, Greece, Italy, the Netherlands, Norway (non-nuclear), South Korea, Taiwan (non-nuclear), and Turkey.<ref>General Dynamics, ''Free World Tactical Missile Systems'' (Pomona, CA: General Dynamics, June 1973) p.251; ''Jane's Weapon Systems 1987–1988'' (London: Jane's, 1987) p.127.</ref>

==Name origin==
[[File:Artilleristen tillen met behulp van een International M62 5-tons 6x6-takelauto een Honest John (2009-012-035 004).jpg|thumb|right|Unloading a rocket from the M329 transport trailer.]]
In late 1950, Major General [[Holger Toftoy]] was a colonel overseeing the development of the rocket. The project was in danger of cancellation "on the grounds that such a large unguided rocket could not possibly have had the accuracy to justify further funds."<ref name=mckenney>{{cite book|last=McKenney|first=Janice E.|title=The organizational history of field artillery 1775–2003|year=2007|publisher=Center of Military History, United States Army|location=Washington, D.C.|isbn=9780160771149|page=212}}</ref> On a trip to [[White Sands Missile Range]], Toftoy met a Texan man who was prone to making unbelievable statements. Whenever anyone expressed doubt about the man's claims, he would respond, "Why, around these parts, I'm called 'Honest John!'" Because the project was being questioned, Toftoy felt that the nickname was appropriate for the rocket and suggested the name to his superiors.<ref name=mckenney /><ref>{{Cite web |title=Honest John |url=https://history.redstone.army.mil/miss-honestjohn.html |url-status=live |archive-url=https://web.archive.org/web/20220422121745/https://history.redstone.army.mil/miss-honestjohn.html |archive-date=22 April 2022 |access-date=31 August 2022 |website=Redstone Arsenal Historical Information |publisher=U.S. Army Aviation and Missile Life Cycle Command}}</ref>

==Support vehicles==
[[File:Overzicht van voertuigen behorende bij de lanceerinrichting voor de Honest John-raket (2155 007716).jpg|thumb|right|Vehicles and components of the Dutch-operated Honest John rocket system. From left to right: M386 launcher based on the M139 5-ton truck, M62 wrecker/crane, M329 rocket transport trailer, M78A1 truck-mounted heating and tie-down unit and [[Willys M38A1]] light utility truck. Prime movers in the rear.]]

Vehicles used with the Honest John platform:{{Citation needed|date=February 2025}}
* M33 trailer, launcher,
* M46 truck, heating and tie down unit (G744)
* M289 truck, rocket launcher, ([[M54 5-ton 6x6 truck|M139 truck]]) (G744),
* M329 trailer, rocket transporter, (G821)
* M386 Truck, Rocket, 762&nbsp;mm, short launch rail, 5-ton (M139 truck)
* M405 handling unit, trailer mounted,
* M465 cart assembly, transport, 762&nbsp;mm rocket,

==Surviving examples==
{{Unreferenced section|date=April 2022}}
'''Belgium'''

* [https://belgiumbattlefield.be/fr/node/96 Gunfire Braaschaat museum], Province of Antwerpen, Braaschat. 

'''Canada'''
*CFB Petawawa Military Museum, [[Garrison Petawawa|CFB Petawawa]], Petawawa, Ontario.
*[http://rcamuseum.com The Central Museum of The Royal Regiment of Canadian Artillery, Shilo Manitoba]
*Outdoor Display of 2 Warheads, Canadian Forces Logistics Training Center Ammo School, CFB Borden, Borden, Ontario.

'''Denmark'''
*[http://www.thm.dk The Royal Danish Arsenal Museum]

'''Netherlands'''
*[http://www.nmm.nl The National Military Museum]

'''United Kingdom'''
*[[Imperial War Museum Duxford]]
*[[Royal Air Force Museum]]

'''United States'''
[[File:CarolinasAviationMuseumHonestJohn.JPG|right|thumb|Restored Honest John on M465 cart at Carolinas Aviation Museum]]
[[File:Honestjohnhillyard.jpg|thumb|Honest John at Hillyard, WA]]
*3rd Cavalry Museum, 1st Cav Museum, [[Fort Hood]], Texas
*[[45th Infantry Museum]], Oklahoma City, Oklahoma
*[[Air Force Space & Missile Museum]], [[Cape Canaveral Air Force Station]], Florida
*American Armoured Foundation, Inc. Tank & Ordnance War Memorial Museum, Danville, Virginia
*[[Bedford, Indiana]], displayed outside a [[military surplus]] store, at the southwest corner of US-50/IN-37 and IN-450.
*Camp Atterbury Military Museum, [[Camp Atterbury|Camp Atterbury, Indiana]].
*[[Carolinas Aviation Museum]], Charlotte, North Carolina (Two missiles are on display – both came from the [[Florence Air & Missile Museum]])
*[[Crestwood, Illinois]], on display at municipal park.
*Combat Air Museum, Topeka, Kansas
*[[Fort Lewis Museum]], Fort Lewis, Washington
*Field Artillery Museum, [[Fort Sill]], Oklahoma
*[[National Atomic Museum]], Kirtland AFB, Albuquerque, New Mexico
*[[Rock Island Arsenal]], Arsenal Island, between Iowa and Illinois
*[[Texas Military Forces Museum]] at Camp Mabry, Austin, Texas<ref>{{Cite web|url=http://www.texasmilitaryforcesmuseum.org/exhibits/outdisplay/pages/001.htm|title=001|date=2007-09-28|access-date=2017-08-30|url-status=dead|archive-url=https://web.archive.org/web/20070928070901/http://www.texasmilitaryforcesmuseum.org/exhibits/outdisplay/pages/001.htm|archive-date=28 September 2007|df=dmy-all}}</ref>
*Underwood Public School, [[Underwood, Minnesota]].<ref>{{Cite web|url=http://www.ci.underwood.mn.us/sights.html|title=Underwood Online--Sights|website=www.ci.underwood.mn.us|access-date=2017-08-30}}</ref>
*[[United States Space & Rocket Center]], [[Huntsville, Alabama]]
*[[Yuma Proving Ground]], Yuma, Arizona
* Milledgeville High School, [[Milledgeville, Illinois]] (home of the Milledgeville Missiles)
* [[Miami Central High School]] [[Miami, Florida]] Home of the "ROCKETS".
* [[A.C. Reynolds High School]] [[Asheville, North Carolina]] Home of the "ROCKETS".
*Outdoor display, [[Spokane, Washington]] – southwest corner of Sanson and Market in Hillyard neighborhood
*Outdoor display, St. Albans Roadside Park, [[St. Albans, West Virginia]]
*Outdoor display, [[White Sands Missile Range|White Sands Missile Range Museum]], New Mexico<ref>{{cite web|url=http://www.wsmr-history.org/HonestJohn.htm |title=White Sands Missile Range Missile Park |access-date=2016-02-03 |url-status=dead |archive-url=https://web.archive.org/web/20160304202040/http://www.wsmr-history.org/HonestJohn.htm |archive-date=4 March 2016 }}</ref>
*Neenah High School, [[Neenah, Wisconsin]]
*Outdoor display, M50 from 6th Bn 112th FA on display at the Armory in Cape May Courthouse, [[Cape May, New Jersey]].
*Outdoor display, Hull Street Outlet Inc., [[Richmond, Virginia]].
*Outdoor display, Trumann Middle School, [[Trumann, Arkansas]]


==Operators==
[[File:MGR-1 operators.png|thumb|400px|Map with former MGR-1 operators in red]]
[[File:Bundesarchiv B 145 Bild-F029235-0024, Nürburgring, Bundeswehrparade zum NATO-Jubiläum.jpg|thumb|West German parade in 1969]]
[[File:Armed Forces Day of South Korea (1973) 5.jpg|thumb|South Korean Armed Forces day in 1973]]

===Former operators===
;{{BEL}}
*[[Belgian Army]]
Used in various Corps and Divisional artillery units (75, 3, 20 and 14th Artillery Battalions) from 1960 to 1978. Replaced by Lance missile.
;{{CAN}}
*[[Canadian Army]]

Canada adopted the MGR-1B with the 1-kiloton W31 warhead. Four units were assigned to 1 Surface to Surface Missile Battery, [[Royal Canadian Artillery]] at Hemer, Germany under [[4 Canadian Mechanized Brigade Group|4 CIBG]]. Two to four units were supplied to 2 SSM Battery at [[CFB Shilo]] in Manitoba for training. These units were formed in September 1960. 1SSM maintained very high readiness and able to deploy to firing positions quickly. Their ability to maintain camouflage kept even elite NATO special forces from locating them in exercises. 1SSM was authorized to wear the black scarf of the [[Congreve rocket]] gunners. Canada disbanded the Honest John batteries in mid-1970 without replacement.<ref>{{Cite web|url=http://www.canadiansoldiers.com/corpsbranches/royalregimentofcanadianartillery.htm|title=Royal Regiment of Canadian Artillery |publisher=www.canadiansoldiers.com|access-date=4 July 2018}}</ref><ref>The Honest John in Canadian Service – John Davidson, Canada's Weapons of War Series, WOW030, A5 size softback, 24 pages,{{ISBN|978-1-894581-71-4}}, Service Publications, Canada</ref>
;{{DNK}}
*[[Royal Danish Army]]
;{{FRA}}
*[[French Army]]<ref>{{Cite web|title=1- Les insignes des unités Honest John et des unités de soutien|url=https://artillerie.asso.fr/basart/article.php3?id_article=1895|access-date=2021-08-28|website=artillerie.asso.fr}}</ref>
**Corps Artillery
***301st Artillery Group [Battalion] (1959–1970) – absorbed into 50th Artillery Regiment
****50th Artillery Regiment (1970–1976)
***302nd Artillery Group [Battalion] (1959–1970) – absorbed into 60th Artillery Regiment
****60th Artillery Regiment (1970–1975)
***303rd Artillery Group [Battalion] (1960–1970) – absorbed into 3rd Artillery Regiment
****3rd Artillery Regiment (1970–1973)
**Divisional Artillery
***3rd Group, 32nd Artillery Regiment (1962–1974)
***3rd Group, 68th Artillery Regiment (1960–1973)
**Nuclear Security
***351st Artillery Group (1962–1970) – expanded to 351st Artillery Regiment
****351st Artillery Regiment (1970–1975)
;{{DEU}}
*[[German Army]]
;{{GRC}}
*[[Hellenic Army]]
;{{ITA}}
*[[Italian Army]]
;{{KOR}}
*[[Republic of Korea Army]]
;{{NOR}}
*[[Norwegian Army]] (1961–1965)
[[File:Op enige tientallen meters van de lanceerinstallatie van de Honest John-raket liggen militairen in afwachting van de lancering van de raket (2155 007712).jpg|thumb|right|Dutch soldiers take cover and await the launch of an Honest John rocket in 1960.]]
;{{NLD}}
*[[Royal Netherlands Army]]<ref>{{cite web |author=Arthur van Beveren |date=17 December 2024 |title=Materieel van toen: Honest John |url=https://magazines.defensie.nl/materieelgezien/2024/10/materieel-van-toen-vrije-raket-762-mm-honest-john |website=Materieelgezien |publisher=Defensie.nl  |language=Dutch}}</ref>
;{{flag|Taiwan}}
*[[Republic of China Army]]
;{{TUR}}
*[[Turkish Army]] – in service with 420th, 450th, 490th, and 550th Battalions, 1963.<ref>{{cite web|title=528th U.S. Army Artillery Group|url=https://www.usarmygermany.com/Sont.htm?https&&&www.usarmygermany.com/Units/Ordnance/USAREUR_528th%20USAAG.htm}}</ref>
;{{GBR}}
*[[British Army]] – 24 Missile Regiment RA 1960/61 – 1977; 39 Missile Regiment RA; [[50 Missile Regiment Royal Artillery]], both 8" inch towed, two batteries, and two batteries Honest John.
;{{USA}}
*[[United States Army]]
*[[United States Marine Corps]]

==See also==
* [[Mark 7 nuclear bomb|W7]]
* [[W31]]
* [[M139 bomblet]]
* [[G-numbers]]
* [[MGR-3 Little John]]

==Notes==
{{reflist|group=notes}}

==References==
<references />

==Models==
Meccano Ltd. U.K. in its Dinky Toys range produced a model of the International Harvester Honest John missile launcher under the reference 665.{{Citation needed|date=February 2025}}

==External links==
{{Commons category}}
*http://www.designation-systems.net/dusrm/r-1.html
*https://web.archive.org/web/20041011052933/http://www.astronautix.com/lvs/hontjohn.htm
*Redstone Arsenal (Alabama) (includes declassified military monograph on the Honest John, chronology, pictures, and a movie of an Honest John firing) [https://web.archive.org/web/20090221141933/http://www.redstone.army.mil/history/systems/HONEST_JOHN.html]
*[https://www.youtube.com/watch?v=x1RhwSx1pM4 Weapons of the Field Artillery – Part 3], U.S. Military Documentary, Film TF6 3646, 1965 
*Honest John Missile Base in Germany [http://www.herzobase.org http://www.herzobase.org]
* http://www.olive-drab.com/idphoto/id_photos_m39_missiletrk.php launchers
* MGR-1A & MGR-1B Honest John Operator & Organisation Maintenance Manual. US Army issue to troops. [https://www.dropbox.com/sh/4wqwml99ilo5q9q/AADwzEqv53n_bH7BHWoGngZ8a?dl=0]

{{US military rockets}}
{{US Army missiles}}
{{Authority control}}
{{DEFAULTSORT:Mgr-1 Honest John}}
[[Category:Unguided nuclear rockets of the United States]]
[[Category:Cold War missiles of the United States]]
[[Category:Surface-to-surface missiles of the United States]]
[[Category:Nuclear artillery]]
[[Category:Cold War rockets of the United States]]
[[Category:Nuclear weapons of the United States]]
[[Category:Cluster munitions]]
[[Category:Nuclear weapons of Canada]]
[[Category:Chemical weapon delivery systems]]
[[Category:Military equipment introduced in the 1950s]]