An article on Tim Belknap the 1981 AAU Mr America.Source: Muscular Development (December 1980) Page #52 - Muscular Development (December 1980) Page #53 -Muscular Development (December 1980) Page #64 -Muscular Development (December 1980) Page #65 -Muscular Development (December 1980) Page #66 -Muscular Development (December 1980)