The first one hundred years of Yankee California :
address at the opening of the Library of Congress California Centennial Exhibit, November 12, 1949.

APA Citation

Wheat, C. I. (Carl Irving)., Library of Congress. (1949). The first one hundred years of Yankee California. Washington: Library of Congress.

MLA Citation

Wheat, Carl I. (Carl Irving), 1892-1966, and Library of Congress. The First One Hundred Years of Yankee California. Washington: Library of Congress, 1949.

Warning: These citations may not always be complete (especially for serials).