Henry Casson (1843–1912) was the Secretary of State for Wisconsin from 1895 until 1899. In 1899, at the start of the 56th United States Congress, he was selected by the Republican majority to serve as Sergeant at Arms of the United States House of Representatives. He served from December 4, 1899 until April 4, 1911 when Democrats took control of the chamber at the start of the 62nd United States Congress.
- "Casson, Henry". United States House of Representatives History Art & Archives. Retrieved 21 October 2016.
- Anderson, William J. (1929). Anderson, William A., ed. The Wisconsin blue book, 1929. Madison, Wisconsin: Democrat Printing Company. p. 144. Retrieved 2008-08-23.
- Barish, Lawrence S. (ed.) (July 2007). "Chapter 8: Statistical Information on Wisconsin". State of Wisconsin Blue Book 2007–2008 (PDF). Madison, Wisconsin: Wisconsin Legislative Reference Bureau. p. 721. ISBN 978-0-9752820-2-1. Retrieved 2008-08-23.
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