Callowhill Street bridge in Philadelphia...
SCIENTIFIC AMERICAN, New York, April 29, 1876 The front page has "Callowhill Street Bridge, Philadelphia, PA" with an accompanying article. Inside the issue is "Legouge's Method of Propelling Canal Boats"; "Broken Stone Road-Making - Blake's Crusher"; and more articles, illustrations and advertisements.
Complete in sixteen pages, never bound, some lite staining on the front cover, otherwise in nice condition.
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