I must've missed this thread before. Great stuff.
Here's one I never get tired of looking at:
And a super rare Billy Taub Clothiers premium, ca. 1930:
One of my absolute favorite images, a June 21, 1935 Acme Newsphoto of Joe Louis, it has appeared in many books on boxing history:
1965 George Harrison:
1960-61 Celtics Bill Russell:
1961 Chamberlain, Russell and Cousy:
1984 Michael Jordan rookie year team issue:
1967 Dick Butkus team issue:
Young Rocky Marciano at camp:
Don't look back, America, something might be gaining on you:
Satchel Paige snapshot:
Biz Mackey in the California Winter League most likely in 1927:
The Cubbies on Catalina Island, ca. 1933, doing their best Seven Dwarves imitation. Heigh Ho, Heigh Ho, It's Off To Work We Go: