Jim, that sounds very interesting! I was try ing to establish if the US maybe also made own ammo back then. Any doc regarding these purchases would be great to see.
US 1 M1882 Very flare gun cartridges - General Ammunition Discussion - International Ammunition Association Web Forum
Original British Pre-WWII Webley & Scott Mk IV 1 ½” Caliber Signal Flare Pistol - Serial H72
Collectible U.S. Militaria- Post WW2 (Korea, Vietnam, Cold War
EOD / BOMB SQUAD EQUIPMENT Archives, Page 3 of 3
US 1 M1882 Very flare gun cartridges - General Ammunition
Flare Pistols - Surplus - More
WW1 Webley & Scott No.2 Mk.I* Flare Pistol 1918 – Canadian Soldier Militaria
Arsenal Force. Searching for Non-restricted
US 1 M1882 Very flare gun cartridges - #14 by EOD - General Ammunition Discussion - International Ammunition Association Web Forum
1 Inch Illumination and Signal Flares (WW2 and Post-war). – Dalditch Camp, History, And Finds on Woodbury Common, Devon.
SIG Sauer. Reliable Gun: Firearms, Ammunition & Outdoor Gear in Canada