It depends on the titles, publishers, typeset, grade of paper, and condition of the books in question for starters. If the books are rare or antique (and books from 1900-1927 wouldn't be considered antique) you might be able to make a little money, but rare book dealers usually only by what can be resold to fill-out personal collections. If the collection of books that you have is a set of encyclopedias then I wouldn't suggest wasting time trying to sell them. If the collection is special publication of literary texts then you might check with a local English Dept. at a university. if the collection in question really is rare, then you need to find a book dealer, someone with real experience that can connect you to a private collector. If what you have isn't particularly valuable, put them in a box, tape the box, and then sell them on e-bay.