Isiah "Butch" Robertson was an American professional football player who was a linebacker for the Los Angeles Rams (1971–1978) and the Buffalo Bills (1979–1982). He was selected to six Pro Bowls during his years with the Rams. He had 25 career interceptions, returning three for touchdowns, scoring a fourth touchdown on a fumble recovery in 1978. According to Rams and Bills records, Robertson also sacked the quarterback 24+1⁄2 times and forced 16 fumbles in his career.

The Professional Football Researchers Association (PFRA) is an organization of researchers whose mission is to preserve and, in some cases, reconstruct professional American football history. It was founded on June 22, 1979 in Canton, Ohio by writer/historian Bob Carroll and six other football researchers and is currently headed by an executive committee led by its president, George Bozeka, and executive director Leon Elder. Membership in the organization includes some of professional football's foremost historians and authors. The organization is based in Guilford, New York.