From the plaque:
Apostle of liberty, humanitarian,
Unitarian minister, who in the Civil War bound California
to the Union and led her to excel all other states in
support of the United States Sanitary Commission, predecessor to the American Red Cross. His statue, together
with that of Father Junípero Serra, represents
California in the National Capitol. His name is borne
by a Yosemite peak-"A man to match our mountains."
Plaque placed by the California State Park Commission in cooperation with the California Historical Society and the First Unitarian Church of San Francisco, April 24, 1960.