The Elizabeth M. MacDonell Memorial Library in the Allen County Museum is a wellspring of information for researchers and genealogists.  The library contains books, maps, microfilm, vertical files, photographs and periodicals which provide information about collections, geographical, historical and biographical information about Allen County and her residents as well as surrounding counties, Ohio and neighboring states--including those from which Allen County pioneers originated.  About 75% of the library’s patrons are involved in family research.  The entire collection of the library is non-circulating.