1990 Map of Hillsboro

This historical map portrays the area of Hillsboro in 1990, primarily covering Washington County as well as portions of Multnomah County. Featuring a scale of 1:24000, this map provides a highly detailed snapshot of the terrain, roads, buildings, counties, and historical landmarks in the Hillsboro region at the time. Published in 1995, it is the sole known edition of this map.