During 1926 Lawrence W. Brown established a small aircraft modification and design operation at Clover Field Santa Monica, California.
His initial project was to modify a Thomas-Morse S-4 as a parasol monoplane with a 90 h.p.
[1] In 1931, Brown moved to Montebello, California and established the Brown Aircraft Co.. From 1933 he built a series of small low-wing racing monoplanes and these competed in the major air racing meetings held in the United States.
Postwar he built the L-20 Brownie, a high-wing monoplane intended for operation by private pilots, but on Brown's death on 25 December 1945, the firm's activities ceased.
[1] The sole surviving original aircraft built by the firm is the Brown B-1 Racer which is preserved in the Wings over Miami aircraft museum at Tamiami Airport near Miami.