Atlas - Southern California - Terminal Island
(AKA Higashi San Pedro or East San Pedro)
Detailed Map: Terminal Island Japanese American Businesses of 1940 (full-sized view)
Map notes repeated from Terminal Island history
Our detailed map does not show [Terminal Island's] physical environment at its  peak. It's based on the 1925 Sanborn maps, with only a small amount of information gleaned from the 1951 maps. The Sanborn Map company didn't bother to map military bases (no business incentive, since the government self-insures) so the post-war pages were never updated (they're blanked out), and it's hard to know (so far) if any buildings remained on the military base, or if everything was demolished in 1942. It's possible there are maps from the late 1930s (or Sanborns saved at intermediate dates) that show the expanded community, but I haven't run across them yet. For example, archival photos show a modern, 1930s era public school, far sturdier than the wooden structures Sanborn shows in 1925, and the directories show quite a few addresses that would have been "offshore" in 1925.
See main page for history and other notes. On this map, notice the cannery operations, and the dense grid of simple, wooden dwellings.