Advertisement. (1902, November 8). Sonnets from the Portuguese. The New York Times.

American Catalogue. (1902). American Catalog, 34. New York: A.C. Armstrong & Son, 1880-1911.

Boston Book Company. (2008). Collection of the trade bindings of Margaret Armstrong. Retrieved from

Browning, E. (1902). Sonnets from the Portuguese. New York, NY: G. P. Putnam’s Sons.

Browning, E. (1900). The Complete Works of Elizabeth Barrett Browning Charlotte Porter & Helen A Clarke, (Ed.). (Vols 1-3). New York, NY: Thomas Y. Crowell & Co.

Dzwonkoski, P. (1986). American literary publishing houses, 1638-1899 (Ed.). Detroit, MI: Gale Research Co.

Gullans, C., & Espey, J. (1968). A Checklist of trade bindings designed by Margaret Armstrong. UCLA Library Occasional Papers, 16, 1 - 37.

Gullans, C., & Espey, J. (1991). Margaret Armstrong and American trade bindings. UCLA Library Occasional Papers, 6, 1 - 135.

Leypoldt, F. (1902). Christmas Number. The literary news: A monthly journal of current literature. XXIII (12), 357.

Penguin Group USA (2010). G. P. Putnam’s Sons. Retrieved from

Public Opinion. (1902). Publications of G. P. Putnam’s Sons. Public opinion: A comprehensive summary of press throughout the world on all important current topics. XXXIII, 697.

University of Alabama. (2005 – 2006). Publishers’ bindings online, 1815-1930: The art of books. Retrieved from

University of Delaware Library. (1996). Color printing in the 19th century. Retrieved from

University of Rochester. (2007). Beauty for commerce: Publishers' bindings, 1830 – 1910. Retrieved from

Wilson, L. (1999). Margaret Armstrong: American book designer. Retrieved from