Saguaro National Park Timeline By JordynManzanares8394796 1920 The Natural History Society Wants To Start Preserving The Plants And Animals 1928 Homer L Shantz Decides To Start Protecting The Park Mar 1, 1933 Saguaro National Park Becomes A National Monument May 1, 1933 Saguaro National Monument Becomes A National Park. Dec 28, 1942 Plane Crashes In The Park 1950 The Visiting Center Opens 1970 Researchers Have A More Important Understanding Of the Saguaro National Park 1975 Another 71,400 Acres Got Added To The Park 1990 The Park Reached Its Record For Highest Temperature : 117 Degrees Fahrenheit 1994 Congress Elevated Saguaro To National Park Status
