The California Entomology Club was formed in 1930 by university, state, and privately employed individuals with mutual interests in entomology. The organization split into Northern and Southern California branches in 1954. Members met to exchange information about economic or practical pest control; the organization maintains a library and insect collection.
From the description of Northern California Entomology Club records, 1930-1976. (University of California, Davis). WorldCat record id: 277247781