N. W. Ayer & Son's American Newspaper Annual: containing a Catalogue of American Newspapers, a List of All Newspapers of the United States and Canada, 1906, Volume 1, book, 1906; (https://digital.library.unt.edu/ark:/67531/metadc9299/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .