Buhl Aircraft Co., originally Buhl-Verville, established 1927 at Marysville, Michigan, continued production of versions of CA-3 Airster, followed by CA-5 Airsedan 5-seat cabin biplane. CA-6 was definitive 6-seat version and CA-8 had 8 seats or cargo. Sales were small, and to help survive in Depression LA-1 Bull Pup single-seater was built 1931 until closure 1933.