Is there a handy chart

[Pavelb1]

Of team salary data going back to 1901?

I'd like to see what the difference between the top and bottom teams was. and if The Sox and Yankees always were near the top.

[etothep]

It doesn't go back to 1901, but this site may be a help to you (specifically the spreadsheets & databases area)

[HoustonGM]

baseball-reference team pages have salary data for most players. Just checking the Yankees, the furthest back it goes is 1985, though.