Maker: Walling and Gray.
This hand colored antique topographic and geological map of Pennsylvania was published in the 1872 "New Topographical Atlas of the State of Pennsylvania with Descriptions Historical, Scientific, and Statistical," by Walling and Gray. This map shows major geological formations, delineated by color. In comparing this map with previous versions, the geological formations appear to differ between maps, despite the atlases claiming to be from the same year. It might be interesting for someone interested in PA geology to compare several of these maps! Very good overall antique condition overall, some toning, some minor spots and smudges. Measures approximately 17.5 x 14 inches.
Item Number: MAT076