File:PHOTOCOPY OF PRE-1948 PHOTOGRAPH OF LOCOMOTIVE CROSSING VIADUCT WITH RELAY HOUSE IN BACKGROUND. Photo identified as Chemy negative no. 4257. Courtesy of the Smithsonian Institution HAER MD,14-ELK,1-18.tif

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标题
PHOTOCOPY OF PRE-1948 PHOTOGRAPH OF LOCOMOTIVE CROSSING VIADUCT WITH RELAY HOUSE IN BACKGROUND. Photo identified as Chemy negative no. 4257. Courtesy of the Smithsonian Institution. - Baltimore and Ohio Railroad, Thomas Viaduct, Spanning Patapsco River, Elkridge, Howard County, MD
描述
Latrobe, Benjamin; McCartney, John; Wever, Casper; Thomas, Phillip E
描绘地点 Maryland; Howard County; Elkridge
日期 Documentation compiled after 1968
尺寸 4 x 5 in.
现存地点
Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
登录号
HAER MD,14-ELK,1-18
荣誉行
This file comes from the Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER) or Historic American Landscapes Survey (HALS). These are programs of the National Park Service established for the purpose of documenting historic places. Records consist of measured drawings, archival photographs, and written reports.

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备注
  • Significance: The first multi-span masonry railroad bridge in the U.S. and the first to be built on a curving alignment, the Thomas Viaduct was the largest bridge in the nation in its day, and was named for Philip E. Thomas, first president of the B and O.
  • Survey number: HAER MD-3
  • Building/structure dates: 1835 Initial Construction
  • Building/structure dates: 1929 Subsequent Work
  • Building/structure dates: 1938 Subsequent Work
参考

本图片所涉及之地点或建筑现被列入美国的国家史迹名录。其登录号为 66000388.
来源 https://www.loc.gov/pictures/item/md0802.photos.082117p
授权
(二次使用本文件)
Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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当前2021年10月9日 (六) 06:412021年10月9日 (六) 06:41版本的缩略图4,376 × 2,613（21.81 MB）NearEMPTiness（留言 | 贡献）Cropped 14 % horizontally, 34 % vertically, rotated -1.5° using CropTool with precise mode.
2014年7月22日 (二) 09:452014年7月22日 (二) 09:45版本的缩略图5,084 × 3,988（19.34 MB）Fæ（留言 | 贡献）GWToolset: Creating mediafile for Fæ. HABS 21 July 2014 (1601:1800)

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