Historical Journal Articles

European Research Archive for Math (ERAM)  The Jahrbuchs ProjectSearchable reviews of the mathematical literature (Jahrbuch uber der Fortschritte der Mathematik) published between 1868 and 1942 with links to fulltext of original papers.

Mathematics journals digitized by the Center for Retrospective Digitization, GĂ¶ttingen (GDZ)38 European origin, many are Germanlanguage. Good repository to check for free 19th century journal articles.

Gallica collection of the BibliothĂ¨que Nationale de FranceThis is a digital library of the National Library of France which contains complete works and biographies of many renowned mathematicians and digitized articles of the Journal of Pure and Applied Mathematics from 1836  1932.
Historical Math Books

The Cornell University Library Historical Mathematics MonographsA collection of over 500 digitized math monographs with expired copyrights (generally published prior to 1923). Searchable, browsable and printable for free.

University of Michigan historical mathematics collectionDigitized outofcopyright math books published in the 19th or early 20th century from the University of Michigan mathematics collection.