First, Galen Clark and others lobbied to protect Yosemite Valley from development, ultimately leading to President Abraham Lincoln's signing the Yosemite Grantin 1864.
Ugu horreyn, Galen Clark iyo kuwo kale ayaa u ololeeyay in ay ilaaliyaan Dooxada Yosemite horumarinta, ugu dambeyntii waxay keentay in madaxweyne Ibraahim Lincoln uu saxiixay deeqda Yosemite ee 1864-kii.