Wallace Clay Penfield (1904-1975) was a notable mapmaker and surveyor in Santa Barbara who played a significant role in local development during the mid-20th century. He was the County Engineer in the 1940s and co-founded Penfield & Smith, a prominent civil engineering and surveying firm, in 1946. Penfield & Smith was responsible for numerous topographic, boundary, and planning surveys in Santa Barbara, Montecito, and the surrounding areas from the 1940s to the 1960s.