Posted By:
Craig W@ Bob
The Cleveland Spiders existed from 1887 to 1899, so they were never really in what we call the "American Major League", which is 1901 - present.
http://en.wikipedia.org/wiki/Cleveland_Spiders>
As for the Boston Pilgrims, well, were they ever really known as the Pilgrims? It appears that Boston was officially the Americans from 1901 - 1907, and became the Red Sox in 1908. Maybe Pilgrims was an unofficial nickname, kinda like the Bronx Bombers or the Pittsburgh Bucs. See the second link below for further reading.
http://en.wikipedia.org/wiki/Boston_red_sox>
http://www.baseball-almanac.com/articles/boston_pilgrims_story.shtml>
Edit: I guess it's possible that if there are any Boston A.L. players in the 150 series (I'll need to check Scot Reader's pdf), and if ATC began preparing those cards as early as 1907 (Ted Z might have this knowledge), then Boston Americans could be an acceptable team nickname. Appears there's a bit more research for me undertake Three things I love are history, trivia, and surfing the net ... Now that's research!!!