Duster Mails
- Given Name
- John Walter
- Nickname(s)
- Walter, The Great, The Great Mails
- Born
- 10/1/1894 — San Quentin, CA, USA
- Died
- 7/5/1974 — San Francisco, CA, USA
- Weight
- 195 lbs
- Height
- 6' 0"
- Throws
- L
- Bats
- L
- Team(s)
- Brooklyn Robins (1915–1916)Cleveland Indians (1920–1922)St. Louis Cardinals (1925–1926)
- Debut
- 1915-09-28
- Final Game
- 1926-04-29
- Gravesite
- Find-a-Grave