File:11903A LO with Heliograph CA 1912 (22762702845).jpg

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Summary

Description 11903A LO with Heliograph CA 1912
Date
Source 11903A LO with Heliograph CA 1912
Author U.S. Forest Service- Pacific Northwest Region

Licensing

This image was originally posted to Flickr by Forest Service Pacific Northwest Region at https://flickr.com/photos/135886671@N08/22762702845 (archive). It was reviewed on 13 September 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark.

13 September 2018

Public domain
This image is a work of the Forest Service of the United States Department of Agriculture. As a work of the U.S. federal government, the image is in the public domain.

Captions

US Forest Service lookout using a Colomb shutter type heliograph in 1912 at the end of a telephone line

Items portrayed in this file

depicts

inception

3 November 2015

media type

image/jpeg

checksum

eb87708aee39217ae0290effef5c5773ce319832

determination method or standard: SHA-1

data size

522,527 byte

height

1,884 pixel

width

2,820 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current20:52, 13 September 2018Thumbnail for version as of 20:52, 13 September 20182,820 × 1,884 (510 KB)wikimediacommons>Tyler ser NocheTransferred from Flickr via #flickr2commons

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