- Card series: Pioneer Portraits II: 1875-1899
- City: Buffalo
- Team: Bisons
- League: National League
Stephen Augustus Libby (1853-1935) played one game for the Buffalo Bisons of the National League on May 10, 1879. His first game was also his last. Libby went on to umpire one game that year and eight more in 1880 behind the plate.
- Libby played 1B, handling 8 chances without an error
- Not as successful at the plate, Libby was 0-2 with a lifetime .000 BA