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DDhttp://dogbert.abebooks.com/servlet/SearchResults?bx=off&sts=t&ds=30&bi=0&yrl=1880&kn=baseball&sortby=2&yrh=1920
Here's a link for abebooks.com for all baseball books from 1880-1920. Some people put in an incorrect published date, so some results will be incorrect. One that I spotted on the first page is The Redheaded Outfield and Other Baseball Stories by Zane Grey, published in 1920.
Hope this helps,
David