by Commonwealth Club of California

1930

by Commonwealth Club of California

1920

by California. Fruit-Growers' Convention

1916

by California Agricultural Experiment Station

1916

by University of California (System). College of Agriculture

1922

by University of California (1868-1952). College of Agriculture

1919

by California Agricultural Experiment Station

1917

by California Agricultural Experiment Station

1919

by California, California. Legislature

1913

by California. State Commission Market

1918

by California. State Market Commission

1916

by California. Legislature

1915