Clarence C. Cappel (1887-1948) was an American concert manager and pianist. Born in Ohio, Cappel conducted and managed a six-piece orchestra before becoming involved with the war camp community service during World War I. From 1932 to 1941, he was manager for the National Symphony Orchestra, where he conceived the idea to begin the Water Gate concerts in the capitol. He managed the Baltimore Symphony from 1942 until his death in 1948. C.C. Cappel headed the effort to include classical music in the USO tours for military and naval posts, acting as director of the concert division of the USO. He also managed the U.S. Marine Band and was involved in many Chautauqua and Lyceum groups and the U.S. Army Band.

Cappel married violinist Helen Ware, and they had four children.

External sources:

"Clarence C Cappel", findagrave.com, https://www.findagrave.com/memorial/114620014/clarence-c-cappel, accessed on Dec. 15, 2023.

"Clarence C Cappel", ancestry.com, https://www.ancestry.com/discoveryui-content/view/912659:2442, accessed on June 8, 2023.

"USO WILL INCREASE CLASSICAL CONCERTS, C.C. Cappel Heads Division to Present Musicians at Camps", New York Times, https://nyti.ms/3v4KL1a, accessed on June 8, 2023.

"IMPRESARIO RESIGNS, C.C.Cappel, Manager of National Symphony Since 1932, Quits", New York Times, Dec. 17, 1940, p. 33, https://nyti.ms/3GMZ7pr, accessed Dec. 5, 2023.

"C.C. Cappel, Former Manager of National Symphony, Dies," Evening Star (Washington, D.C.), April 16, 1948, p. A10, https://chroniclingamerica.loc.gov/lccn/sn83045462/1948-04-16/ed-1/seq-10/, accessed Dec. 5, 2023.

"CLARENCE C. CAPPEL, ORCHESTRA MANAGER" obituary, New York Times, April 17, 1948, p. 15, https://nyti.ms/3v0rjT7, accessed Dec. 5, 2023.