There was a fair amount out there about John Agar -
http://www.johnagar.com/index.htm
http://www.classicimages.com/1998/april98/johnagar.html
http://www.briansdriveintheater.com/johnagar.html
http://www.meekermuseum.com/agar.html
http://www.nndb.com/people/150/000065952/
http://www.wildestwesterns.com/john_agar.htm
http://www.msu.edu/user/holuta/agar.htm
Mrs. C 
