Under authority of the act of Congress approved June 25, 1910 (36 Stat. 847), as amended by the act of August 24, 1912 (37 Stat. 497), it is hereby ordered that the unreserved public lands within the following listed townships, as now surveyed or as they probably will be when surveyed, in the State of California, be, and the same are hereby, temporarily withdrawn for classification and pending determination as to the advisability of including such lands in a national monument, subject to the conditions of the aforesaid acts and to valid existing claims:
Mount Diablo Base and Meridian
T. 11 S., Rs. 40, 41, 42, 43, and 44 E;
T. 12 S., Rs. 40, 41, 42, 43, 44, and 45 E;
T. 13 S., Rs. 40, 41, 42, 43, 44, 45, and 46 E;
T. 14 S., Rs. 40, 41, 42, 43, 44, 45, and 46 E;
T. 15 S., Rs. 40, 41, 42, 43, 44, 45, and 46 E;
T. 16 S., Rs. 41, 42, 43, 44, 45, and 46 E;
T. 17 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 18 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 19 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 20 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 21 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 22 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 23 S., Rs. 42, 43, 44, 45, 46, and 47 E;
T. 24 S., Rs. 42, 43, 44, 45, 46, and 47 E;
San Bernardino Base and Meridian
T. 20 N., Rs. 1, 2, and 3 E;
T. 21 N., Rs. 1, 2, and 3 E;
T. 22 N., Rs. 1, 2, and 3 E;
T. 23 N., Rs. 1, 2, and 3 E;
T. 24 N., Rs. 1, 2, and 3 E;
T. 25 N., Rs. 1, 2, and 3 E;
T. 26 N., Rs. 1, 2, and 3 E;
T. 27 N., Rs. 1, 2, and 3 E;
T. 28 N., Rs. 1, 2, and 3 E;
T. 29 N., Rs. 1, 2, and 3 E;
T. 30 N., Rs. 1 and 2 E;
T. 31 N., R. 1 E.
This order shall continue in full force and effect unless and until revoked by the President or by act of Congress.
HERBERT HOOVER
The White House,
July 25, 1930.
Herbert Hoover, Executive Order 5408—Withdrawal of Public Lands for Classification, California Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/361097