N. W. Ayer & Son. N. W. Ayer & Son's American Newspaper Annual and Directory: A Catalogue of American Newspapers, 1915, Volume 1, book, 1915; (https://digital.library.unt.edu/ark:/67531/metadc9279/m1/254/: accessed August 4, 2020), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .