A.C.F. Brill

An American manufacturer of buses from 1926 to 1953.  Based in Philadelphia, Pennsylvania.

A.C.F. is for American Car and Foundry Co.  A.C.F. Brill formed in 1925 when A.C.F. bought J.G. Brill Co. and Fageol Motors Co.

Model names used by A.C.F. Brill include:  C-27, C-31, C-38, C-44, IC-37, IC-41, and Metropolitan.

Sometimes badged vehicles as simply "Brill".