This comical and scarce war time, extra large format cartoon print was published by the Canadian Royal Air Force in 1944. Based on a notation in the print it may be a numbered edition and is drawn and signed "Duchak" by Canadian artist John Duchak (1921-2012) during his wartime service. The letters "CRAF" are faintly visible after his name. The publication location is not given. I have not located another example of this artwork, "Range Estimation Gives Accurate Shooting!"
John Duchak served in the Royal Canadian Air Force during WWII overseas as a cartoonist.1 His work was printed for distribution and education of Royal Canadian Air Force personnel. Duchak was educated in England and attended the Martin School of Art in London. This cartoon and a companion piece also on offer, "Keep an Accurate Log Sheet!" were therefore likely drawn in Europe based on their subject matter showing a Canadian Royal Air Force pilot in combat with Nazi pilots as the enemy. The No.6 (RCAF Group) - RAF Bomber Command is the group in which Duchak served.2 The Duchak cartoon uses humor and comical graphics to reinforce the Canadian Air Force safety messages to pilots and crew. Duchak's signature style is historic, comical and ironic. The subjects of his artwork included members of the Allied Command in England where Duchak was stationed. Some time after WWII, Duchak moved to the United States where he continued to work as a graphic artist, settling first in Massachusetts and then in Maine. 3
Notes:
1. For a well researched presentation of John Duchak's portfolio and war service as an artist, please see:https://clarencesimonsen.wordpress.com/2017/03/26/sergeant-john-dana-duchak-r176475-rcaf-artist-wordpress-version/ that includes extensive examples of Duchak's art work, including the creation of the logo for No.6 RCAF Group.
2. No - airfield_no6group.pdf
3. John Duchak and family moved to Massachusetts after his CRAF service and in 1990 moved to Rockland, Maine where he lived for twenty-two years. Please see, John D. Duchak, obituary | PenBay Pilot