↑Keir Brooks Sterling, Richard P. Harmond, George A. Cevasco, Lorne Foster Hammond: Biographical Dictionary of American and Canadian Naturalists and Environmentalists. Greenwood Press, Westport, Connecticut, London 2006, S. 613–615. ISBN 978-0-313-23047-9
↑Charlotte M. Porter (1985). The Lifework of Titian Ramsay Peale, Proceedings of the American Philosophical Society, 129 (3) : 300–312. (ISSN 0003-049X)