From Consumer Wiki
If consumers need a source for a donated flag, they may try contacting the Veterans of Foreign Wars office, various branches of the military forces, or their legislator at the federal level. In addition, California and United States flags may be ordered (with prepayment) from the California Legislature State Senate Publications Office listed below.
California and United States flags are available in 4 different sizes; pre- payment required on all flag orders. Call for information on methods of payment and delivery.
State Capitol, Room 3044
Sacramento, CA 95814
Information about Flag code and etiquette: