Variants: NA-16: The predecessor of the whole North American trainer line, the NA-16/BT-9 basic trainer of 1935 established the basic design that would lead to the T-6, although the NA-16 had a fabric-covered fuselage and fixed landing gear.
BT-9A: .30-cal machine guns for the pilot and back seater
Y1BT-10: Solitary R-1340-41 powered aircraft; production version not proceeded with.
BT-14: metal-covered fuselage, BC-1/AT-6 type tail
BT-14A: BT-14s with R-985-11
AT-6C: Molded plywood and steel components to save strategic materials for combat aircraft; many retrofitted later with aluminum replacement structures. RAF model designated Harvard Mk.III
AT-6D: Major AT-6 production model; 24-volt electrics. SNJ-5 was the naval version, Harvard IIA for the UK.
XAT-6E: AT-6 rebuilt with V-770-9.
AT-6F: Reinforced airframe. Naval equivalent was SNJ-6.
T-6G: Even after the arrival of North American’s much larger T-28, there was still a need for a trainer in the Texan’s class, and North American rebuilt many examples into T-6G configuration, with the R-1340-AN-1 engine, more fuel, revised canopy design, and improved cockpit. The naval equivalent was the SNJ-7. The Harvard IV, built by Canadian Car & Foundry, was a new-build Canadian version.
NA-50: R-1820-77 powered single seat export fighter, armed with two .30-cal MGs and provisions for carrying 500lbs of bombs. Seven examples built for Peru, the last of these being retired as late as 1961.
A-27: light bomber version able to carry 400lbs of bombs, with pairs of .30-cal MGs in the wings and cowling, and one gun in the rear cockpit. Siam ordered ten, but the Japanese takeover prevented their delivery, and the aircraft were instead flown by the US as A-27s. Brazil and Chile bought similar aircraft as NA-7s and NA-74s, respectively.
Phil Butler Air Arsenal North America: Aircraft for the Allies 1938-1945 – Purchases and Lend-Lease p.246-250 Photos of RAF Harvard Is, Royal Navy Harvard III, plus Lend-Lease aircraft serial number information
Gerry Manning 1000 Preserved Aircraft in Colour p.66-67 Yale C-GCWY, Italian T-6 MM54098, Venezuelan Harvard
Dana Bell Air Force Colors Vol.1 1926-1942 Squadron/Signal Publications p.49 photo of a BC-1A of the 120th Observation Squadron; p.73 color profile of a 46th School Squadron BT-9; p.74 photo of a BC-1A in war games camouflage
Jim Winchester Classic Military Aircraft – The World’s Fighting Aircraft: 1914-1945 p.337: color profile of RAF Harvard Mk.I N7033
Norma-Hoffmann Bearings ad, featuring a front-quarter shot of an NA-49 Harvard Aviation May 1939 p.87
North American ad showing a BT-14 in flight Aviation March 1940 p.74
Photo: frontal view of a T-6 equipped with crosswind landing gear Aviation Week September 18, 1950 front cover
Photo: Air France Flying School Harvard F-BJBM Air Pictorial September 1962 p.301
Photo: Side-view of a Swedish Sk 14A (NA-16-4); there is also a shot of a ski-equipped Sk 14. Air Pictorial February 1963 p.36
Richard E. Gardner "Harvards of the SAAF" Airfix Magazine October 1971 Includes marking diagrams.
Photo: T-6 N9522C converted to a singloe seat crop duster Air Classics May 1974 p.11
Color profiles: A nice selection of T-6s and Harvards, including aircraft from South Africa, New Zealand, Pakistan, Sweden (Sk14A) Syria, Portugal, and Brazil. Air International April 1983 p.196-197
Photo: Overhead view of brand-new AT-6As lined up at Dallas Aeroplane Monthly May 1988 p.264 Photo: SAAF Harvards #7647, 7675, and 7692 Air International April 1988 p.168
NA-50 3-view and photo of Peruvian AF #251 Air International March 1989 p.145
NA-68/P-64 3-view and small photo Air International April 1989 p.184
David Batt "Quick Build: North American T-6G Harvard" Scale Aviation Modeller International February 1999 The 1/48 Occidental Models kit
Color profile: RNZAF Harvard II NZ932 Scale Aviation Modeller December 2003
David Batt “Harvard Home” Scale Aviation Modeller April 2009 building Monogram’s 1/48 AT-6 as a Harvard
Photo: SNJ-4 N7404C Red Baron side view Warbirds International Jan/Feb 2009 p.64
Photo: SNJ-4 N101X Warbirds International Sept/Oct 2009 p.66