Map Crook N. F., 1927
GLO Map, 1909, Bilas.
P.O. and settlement south side Gila river, 6 miles northwest of Geronimo. "So called after an Apache chief by this name." Letter, L. O. Townsend, P. M.
Bylas lies at the eastern edge San Carlos lake. Thos. E. Reed, P.M., Sept. 13, 1917.