technology from "The Pictorial Sketch-Book of Pennsylvania ... Illustrated with over 200 engravings, and a colored map. Eighth edition, revised and greatly enlarged"

This image has been taken from scan 000435 from "The Pictorial Sketch-Book of Pennsylvania ... Illustrated with over 200 engravings, and a colored map. Eighth edition, revised and greatly enlarged". The title and subject terms of this image have been generated from tags, created by users of the British Library's flickr photostream.