Wilcox ran an airport, located NE of Tulsa in Verdigris, that consisted of associated hangars and an office on 300 acres. William Collier built a number of planes there, reportedly including the 1930 T-12, until he relocated to Kansas.
The T-12-1 Sport Trainer was possibly first registred N550V.
T-12-1 Sport Trainer
Engine: 110hp Warner Scarab (originally a Siemens)
Wingspan: 31’6″
Length: 21’7″
Seats: 2
All Aero 