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19th century

history of pennsylvania

iron

keystone view company publisher

machine

modern

pennsylvania

pig

modern pig iron machine

public
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Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Picryl description: Public domain image from Robert Dennis collection of stereoscopic prints, free to use, no copyright restrictions.

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... More

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Picryl description: Public domain image from Robert Dennis collection of stereoscopic prints, free to use, no copyright restrictions.

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Modern pig iron machine at rest, Pittsburg, Pa., U.S.A.

Pennsylvania stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who... More