Headquarters Girl Scouts - Mt. Wilson Vista Council 101 E. Wheeler Ave. Arcadia, California 91006 (626) 445-7771    Fax (626) 447-0683 girlscouts@gsmwvc.org Regional Office 11100 E Valley Blvd. Suite 300 El Monte, CA 91731 (626) 453-0253    FAX (626) 453-0245 Business Hours Monday – Thursday, 8 a.m. to 5:30 p.m. Council Shop Monday – Thursday, 10:00 a.m. to 5:30 p.m. and the first Saturdays of the month (except July and August) from 9:00 a.m. to Noon. Property Reservations Girl Scouts – Mt. Wilson Vista Council operations three program centers in the San Gabriel Valley, including Camp Mariposa in Altadena, the Montrose Program Center in Montrose, and the San Gabriel Program Center in San Gabriel. Click for more information.

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