|Born||Sidney Harry Riesenberg
|Died||1971 (aged 85–86)
Cambridge, Massachusetts 
|Education||School of the Art Institute of Chicago|
|Notable work(s)||Over the Top for You|
Riesenberg was born in 1885 in Chicago. He was educated at the School of the Art Institute of Chicago, where he was recognized for the quality of his oil compositions. He later moved to Yonkers in 1905 to continue his career. In the early 1930s, he began doing illustration work for magazines. In the 1930s and 1940s, his work was often featured at venues such as the National Academy of Design and in organizations such as the Allied Artists of America. Riesenberg was also the vice president of the Yonkers Art Association. Riensenberg died in 1971 in Massachusetts.
Of Riesenberg's work, his contributions during World War I are most noted and he is described as "one of the greatest illustrators of the World War I era." Riensenberg's style shows influences from Impressionism.
He produced many posters for the Marines in addition to posters advertising the Liberty Loan campaign during World War I. One of Riesenberg's most notable works is his 1918 World War I-era poster, Over the Top for You, which depicts a young doughboy clutching the American flag. With its bold illustration and concise text, like many war posters of the time, Over the Top for You encouraged the public to support its military by purchasing liberty loans. Amongst other posters, it was selected to display in the Smithsonian American Art Museum under the exhibit, Over the Top: American Posters from World War I. Riesenberg also created several posters for the United States Navy, one of which, titled Demoncracy's Vanguard, illustrates Marines landing from a boat to initiate an offensive. Others depicted uniformed members raising the flag and walking amidst a background of warship.
Riesenberg was also created artwork for several publications such as covers for Harper's and illustrations for The Saturday Evening Post. He was also noted for his work depicting the Old West.
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- Carr, Nick; Carr, compiled by Nick (1989). The western pulp hero: an investigation into the psyche of an American legend. Mercer Island, Wash.: Starmont House. p. 37. ISBN 1557420327.
- Frank M. Robinson & Lawrence Davidson; with technical assistance by John Gunnison (1998). Pulp culture: the art of fiction magazines (1st American ed.). Portland, Or.: Collectors Press. pp. 73, 81. ISBN 1888054123.
- Fielding, Mantle. "Riesenberg, Sidney". Mantle Fielding's Dictionary of American Painters, Sculptors & Engravers. 1983. OCLC 71160893
- United States, et al. Recruiting Posters Issued by the U.S. Army and Navy Since the Declaration of World War 1. [Washington, D.C.]: Press, U.S. Navy Recruiting Bureau, 1918. OCLC 177507026