Compiled by Daniel A. Wells. Rivera Ref Z1225 W38 1996. 5 of the 14 titles recommended by G. Cohen are covered in this resource. Another useful electronic index is the Periodical Contents Index , or PCI . A good entry to the various databases UCR has access to is from the Find Databases By Subject page from the UCR Library Website .
Many resources exist on the Web .
A Compilation of Web Sites and Other Connections. Michael O Conner. Historical Collections for the National Digital Library. The Nineteenth Century in Print . 19 th century American imprints dating mainly between 1850 and 1880.