Staple Bend Tunnel :
Allegheny Portage Railroad National Historic Site, Pennsylvania /
prepared by Sellardse Grigg, Inc.

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Related Names
United States. National Park Service.
Sellards & Grigg, Inc.
Language(s)
English
Published
[Washington, D.C.?] : U.S. Dept. of the Interior, National Park Service, [1991]
Subjects
Railroad tunnels > Pennsylvania > Design and construction > History.
Staple Bend Tunnel (Pa.) > History.
Note
Shipping list no.: 91-705-P.
"Historic structure report, architectural data section."
Cover title: Historic structure report: Staple Bend Tunnel, Allegheny Portage Railroad National Historic Site, Pennsylvania.
Item 624-E-1
Physical Description
1 v. (various pagings) : ill. ; 28 cm.
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