How to find those long sought-after books

Found Aunt Doris in a county history book? Want to own a copy of that book for future reference or just as a keepsake? In her article, "Finding Rare Genealogical and Historical Books," Gena Philibert-Ortega suggests a number web sites to help you find a copy of that treasured book, in addition to some tips and hints for evaluating books and finding one in your price range.