Monterey Customhouse Constructed by the Mexican Government during 1827 and 1841 to collect customs duties from foreign shipping when Monterey was the capital of this northern province, and custom duties were Alta California's principal source of revenue. United States Customhouse from 1848 until 1867, this plaque is dedicated to all the customs officers who have served in this building, and in honor and recognition of the U.S. Customs Service bicentennial. Presented by Quintin L. Villanueva, Jr. Regional Commissioner U.S. Customs Service Pacific Region August 18, 1988