Dorr was cast in two Hollywood comedy shorts, both released by Pathé Exchange (RKO) in 1930: All Stuck Up and Ride 'em Cowboy; then for the remainder of the 1930s, he demonstrated his abilities at portraying an array of characters such as hotel clerks, police officers, reporters, and many more, under contract as a "day player".
Dorr was cast in two Hollywood comedy shorts, both released by Pathé Exchange (RKO) in 1930: All Stuck Up and Ride 'em Cowboy; then for the remainder of the 1930s, he demonstrated his abilities at portraying an array of characters such as hotel clerks, police officers, reporters, and many more, under contract as a "day player".