This historical map portrays the area of Byron in 1940, primarily covering Contra Costa County as well as portions of Alameda County and San Joaquin County. Featuring a scale of 1:62500, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the Byron region at the time. Published in 1943, it is the sole known edition of this map.
This is the sole edition of this map. No revisions or reprints were ever made.