These titles are individually cataloged in OneSearch.
                    
        
            Index to the Afro-American Rare Book Collection
        
                    
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                    This blog post from the Davenport Public Library has more information about Mayme Clayton and the collection she created. There is also an interview with her in the HistoryMakers video collection.
Many of these titles are in the public domain and can be found in HathiTrust, Google Books, or the Internet Archive.