- Bats Unknown, Throws Unknown
He played with Washington teammate Howard Wall on a Chesapeake team before appearing in the National Association. He was described as "a young man" when he joined the Blue Legs. He was then with the Washington Nationals in 1874, a season during which they were not part of the N.A.
There was a William Atkinson who lived in Washington, DC at the same time Ed Atkinson was active as a player and who would have been the right age (he was born in 1853), but there is no corroboration that it is the same person as the ballplayer.
- "Edward Atkinson", in Bill Carle, ed.: Biographical Research Committee Report, SABR, March/April, 2016, pp. 1-2.