All Aero

Huff Daland and Co Inc of Ogdensburg, New York.
Huff-Daland became Keystone March 1927, still centered at Bristol, Pennsylvania.
Keystone Aircraft single-engined biplanes in the early 1920s had their origins in the single-¬engined XLB 1 prototype and nine pre series LB 1 biplanes produced in 1925 by Huff Daland and Co Inc of Ogdensburg, New York.