Was visiting Buffalo, sometime in the 90's, and the NFLPA was raising funds at the Walden Galleria. I made a donation, maybe $10 or 20, and they personally signed a Nieman print for me.
The players were; Charley Ferguson WR #80, Lou Piccone WR #89, Robert James CB #80, and one mystery signature that looks like Bob Dugan #74, but I can't identify that name in any reference.