LeBaron authored several plays for Broadway; including the books and lyrics for several musicals in addition to non-musical works staged in New York City between 1911 and 1925.

[2] By 1926 LeBaron had relocated from New York City to Los Angeles, and was thereafter predominantly active as a film producer.

LeBaron also produced landmark comedy features from W. C. Fields, Mae West and Wheeler and Woolsey.

In addition to being a producer, LeBaron served as the last production chief of Film Booking Offices of America and at FBO's successor, RKO Pictures, where he was replaced by David O. Selznick.

[3] LeBaron died on February 9, 1958, at age 74, and was buried in Chapel of the Pines Crematory.