On 27 August 1964 I identified a living adult female Thick-billed Murre Uria lomvia arra, which had been delivered to the Pacific Grove Museum of Natural History by Patrick McGreal of Sacramento, California. The bird had been found on the local beach in weakened condition with oil on its plumage. Incomplete molting had left the flight feathers badly worn. The white maxillary marking was clearly visible and bill measurements left no doubt as to identification of this bird. To my knowledge this was the first record of the species on the West Coast of the United States south of British Columbia, a range extension of over 10° latitude beyond its previous casual southern record. There are no known records for the States of Oregon or Washington.