Cal. Pub. Resources Code § 610
For the purpose of disseminating information relating to its activities, powers, duties, or functions, the department may issue publications, construct and maintain exhibits, and perform acts and carry on functions, as in the opinion of the director, will best tend to disseminate the information.
These publications may be distributed free of charge to public libraries and to other state departments and state officers. The department may exchange copies with contemporary publications.
All money received by the department from the sale of publications, exclusive of money received by any separate division of the department from the sale of publications, shall be paid into the State Treasury to the credit of the General Fund.
Ca. Pub. Res. Code § 610