So this turned up accidentally during a google image search.
I've mentioned here a couple of times that the collection of the Topps Bay Area photographer from 1971 through the '90s, Doug McWilliams, had been donated and screened by the Baseball Hall of Fame Library. Little did I know that a few dozen of these gorgeous images have been posted, cleanly, with the McWilliams/HOF credit but no other restrictions noted, on a HOF blog (these below are from this entry:
Rollie Fingers? three days with the Red Sox | Baseball Hall of Fame). The easiest access to these seems to recreate what I did by accident - do a google search for McWilliams and "Baseball Hall of Fame." Most of the images are, naturally, HOF'ers, though I see Herb Washington and a few other obscure guys popping up.
I would assume the HOF would come down like a ton of bricks on anybody who tried to use these commercially but they seem clearly disinterested in private use.
(If you don't know the story of Fingers in a Boston uniform: with mass free agency looming that off-season, he and Joe Rudi were sold to the Red Sox by Oakland owner Charlie Finley on June 15, 1976 - while Boston was in Oakland. Vida Blue was also sold to the Yankees. Fingers suited up for one game for the Sox as Commissioner Bowie Kuhn first froze the sales and then reversed them. Doug McWilliams managed to get his friend Fingers to pose, mid-season, in a uniform he never wore in game action).
So here's the same credit the HOF uses in its blog:
(Doug McWilliams / National Baseball Hall of Fame)