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timeline. Marquette and Joliet found the unusual Tower Rock in 1673 La Salle passed by in 1682 In 1698, missionaries put three crosses on the island. Lewis and Clark came by Tower Rock in 1803 In 1839, John Davis and Penelope Pike were married on the rock
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timeline • Marquette and Joliet found the unusual Tower Rock in 1673 • La Salle passed by in 1682 • In 1698, missionaries put three crosses on the island. • Lewis and Clark came by Tower Rock in 1803 • In 1839, John Davis and Penelope Pike were married on the rock • "Plymouth Rock" for 750 Lutherans from Germany who landed here in 1839 • 1870s ferry crossing the mississippi • President Ulysses S. Grant himself stepped in to save Grand Tower Rock in 1871 • Grand Tower Plant was first placed in service in November 1924 • 47-megawatt Unit 3 was completed on Jan. 1, 1951 • 104-megawatt Unit 4 was placed in service in March 1958 • Tower Rock Ferry shortly after it started operating in October of 1966 • Powerplants Units 1 and 2 were retired in September 1972 • 1993 flood • Lewis & Clark re-enactors came by in November, 2003