- U.S. Senate. 3/4/1789-
- Center for Legislative Archives
This bill, signed into law by President Lincoln on June 30, 1864, represents the first time the federal government acted to protect and preserve scenic lands. Conservationists persuaded Senator John Conness to introduce a bill to keep Yosemite Valley from being ruined by increasing commerce and tourism. The bill granted Yosemite to the state of California.