While searching for the building on which sat the giant leg (so far unsucessfully), I found a few interesting items. (Not sure why a search for "leg" turned this one up, which appeared among many weird photos of diseased legs....)
USC Digital Library
http://lh.ggpht.com/_zXN_GwdMYMo/TUW...576/oj1970.jpg
USC caption: "GRACIOUS LIVING--O.J. Simpson, his wife, Marguerite and daughter Arnelle, enjoy the luxury of their new $100,000-plus home in the Sky Crest section of Bel-Air. The former USC star, recently named the outstanding college football player of the 60s, will start second pro season with he Buffalo Bills July 17.
Los Angeles Times, July 3, 1970"