File:Report on the Pittsburgh Transportation Problem 1910 relief map.jpg

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Description
English: "Relief Map of Street Railway System in Pittsburgh and Vicinity", Pittsburgh, Pennsylvania, 1910. This shows the gradients of the Pittsburgh streetcar (trolley) lines. In the lower left, the loop-type portion of the system is still operating as of 2021.
Date
Source "Report on the Pittsburgh Transportation Problem", by Bion J. Arnold, December 1910, Pittsburgh, Pennsylvania.
Author Bion J. Arnold (author of report)

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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Report_on_the_Pittsburgh_Transportation_Problem_1910_relief_map.jpg

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current18:02, 20 May 2021Thumbnail for version as of 18:02, 20 May 20216,254 × 4,250 (3.2 MB)Canadian2006 (talk | contribs)Uploaded a work by Bion J. Arnold (author of report) from "Report on the Pittsburgh Transportation Problem", by Bion J. Arnold, December 1910, Pittsburgh, Pennsylvania. with UploadWizard

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