Staple Bend Tunnel : Allegheny Portage Railroad National Historic Site /

Bibliographic Details
Corporate Authors:	Sellards & Grigg, Inc, United States. National Park Service
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.?] : U.S. Dept. of the Interior, National Park Service, [1991]
Subjects:	Tunnels > Pennsylvania > Design and construction > History. Railroad tunnels > Pennsylvania > History. Allegheny Portage Railroad National Historic Site (Pa.)
Online Access:	https://purl.fdlp.gov/GPO/LPS114182

Description
Item Description:	Title from title screen (viewed June 29, 2009). "Historic structure report, architectural data section." Electronic resource.
Physical Description:	1 volume (various pagings) : illustrations ; 28 cm.
Format:	Mode of access: Internet from the NPS web site. Address as of 06/29/09: http://home.nps.gov/applications/parks/alpo/ppdocuments/sbtnew.pdf ; current access is available via PURL.
Bibliography:	Includes bibliographical references.