Ambulance unit SSU-516; From excerpt: This is a photograph of Staige Davis Blackford's father, Staige Davis Blackford (Johnnie Blackford) and his World War I unit, SSU-516, one of two ambulance units formed at the University. SSU-516 unit in training in Allentown/Tobyhanna, Pennsylvania, tentative identifications: (front row, left to right): [?], "Bishop" Grier, "Muldoon" Neff, "Sarge" P. Warren, "Loot" Cole, Sgt. Luther Kelley, Sgt. Charlie Jenkins, Staige Davis "Johnnie" [?] Blackford, Bob Chirmside, E.K. Brigham, "Doggie" D'Agostino, Ollie Jouette, Ben McClure. (Back row, left): Joe Escajeda, Frank Stephens, Mike Carter. (Back row, right): Harrison Welton, Tom Guy Hoskins, Mike Messina, Old Man Straues, Trooper Wharton Payne, William Harig, and Peyton Drury.