1961 Map of Slippery Rock

This historical map portrays the area of Slippery Rock in 1961, primarily covering Butler County as well as portions of Mercer County and Lawrence 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 Slippery Rock region at the time. Published in 1972, it is one of 4 known editions of this map due to revisions or reprints.