Clarence Henry Geist was a financier who played an important role in the early history of Boca Raton, Florida. He was born and raised on a farm in LaPorte County, Indiana. When he was 18 he left Indiana and spent five years in the far West working in cattle ranching, but returned to Chicago when he realized he "could not make money where there wasn't any". He worked for a year on the Rock Island Railroad, after which he entered the real estate business. His wife was Florence Hewitt Geist. He walked with a cane and was an avid golfer, participating in tournaments. From 1912 to 1938 he was the principal owner of the Indianapolis Water Company. Geist Reservoir is named for him. He also founded in 1910 the company today known as South Jersey Industries, when the Atlantic City Gas and Water Company merged with Atlantic City Gas Company. He eventually owned over 100 utilities. Geist was a friend of Charles G. Dawes, who in 1925 became Calvin Coolidge's Vice-President. Geist left Indiana first to work for the Dawes family in Chicago. In 1924 he had built in Palm BeachLa Claridad, a mansion designed by Palm Beach architect Marion Sims Wyeth, who also designed Mar-a-Lago. He was a member of the Everglades Club, and the mansion was built on the club grounds. When Addison Mizner's Mizner Development Corporation went bankrupt in 1926 after trying to build the new resort of Boca Raton, Geist bought its assets in 1927 via an anonymous bid of $76,350. Included were the Cloister Inn, fifty houses, and 15,000 acres of land. He commissioned the New Yorkarchitectural firmSchultze and Weaver to create an addition to the 100-room Cloister Inn, resulting in the 450-room Boca Raton Club, which accepted its first guests in December, 1929, ahead of its 1930 formal opening. Geist made a low-interest loan to Boca Raton to finance its first municipal water plant and provide water for the guests at his new hotel. He built it in Mizner's style, for visual harmony. At the time, the handsome, Mediterranean-style plant was the most modern in the state. He also paid for an elegant, Mediterranean-style depot on the Florida East Coast Railway. Geist allegedly bought stock in the railroad in order to influence its choice of Boca Raton depot. The bridge over the Intracoastal Waterway on Mizner's Camino Real is officially the Clarence H. Geist Memorial Bridge, replacing a temporary swing bridge built by Geist. A Clarence H. Geist Memorial Organ is located at the Overbrook Memorial Church in Overbrook, New Jersey. Geist was the founder and owner of the New JerseySeaview Country Club. He was on the Board of the Lehigh Coal and Navigation Company at the time of his death. He owned a Philadelphia Main Line mansion.