 He co-authored seven books chronicling or based on his expeditions, beginning with 1930's "Bring 'Em Back Alive", which became a bestseller.Between 1932 and 1943 he starred in seven adventure films based on his exploits, most of which featured staged "fights to the death" with various wild beasts.He was also briefly a director of the San Diego Zoo, displayed wild animals at the 1933–34 Century of Progress exhibition and 1939 New York World's Fair, toured with Ringling Bros. and Barnum & Bailey Circus, and co-authored an autobiography, 1941's "All in a Lifetime".