"A Topographical & Geological Map of the Coal Measures, & of the Muriatiferous & Ferruginous Deposits, in the Secondary Region of the Valley of the Ohio",

This map by S.P. Hildreth is one of the earliest geological maps of the West Virginia region, covering the area from the Allegheny Mountains of Virginia north to Pittsburgh and west to Columbus. It is densely filled with geological information including petroleum springs, salt springs, iron ore, lead ore and limestone deposits to name a few. The map also shows good detail of topography via hachure and the river system. To the left is a profile view of the Ohio Valley.

References: Marcou #353.

Condition: B

Issued folding with moderate offsetting and a short binding tear at right that has been closed on verso with archival tape.