selected late 19th & 20th-century maps that show Rancho Posolmi / Ynigo rancho
United States Geological Survey topographic maps:
Mountain View 1:24,000 (1997)
Palo Alto 1:62,500 (1899 & 1961)
Santa Cruz 1:125,000 (1902)
selected late 19th & 20th-century maps that show Escorpion
United States Geological Survey topographic map: Calabasas 1:62,500 (1903)