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Index map for sheets, extract of military map of N.E. Virginia showing forts and roads - (Washington D.C. metropolitan area).
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Index map for sheets, extract of military map of N.E. Virginia showing forts and roads - (Washington D.C. metropolitan area).

Relief shown by hachures. Depths shown by soundings. Alternate title in upper right margin: Defenses of Washington. Facsim. of map in J.G. Barnard's A report on the defenses of Washington to the Chief of Engineers, U.S. Army, 1871. Original version: Washington: Corps of Engineers, 1871. "Plate 1." LC lacks other sheets. DCP

Date
1871
Mapmaker / publisher
U.S. Army Engineer School; Barnard, J. G. (John Gross); United States. Army. Corps Of Engineers
Place
Maryland
Archive
Library of Congress (via Wikimedia Commons)
Type
map
Original size
2,185 × 2,804 pixels

Public domainsafest

Reason: its maker died more than 100 years ago.

Read from: Commons licence category: PD-old-100-expired; no CC BY, CC BY-SA, GFDL or deletion tag on the file page.

Credit line

"Index map for sheets, extract of military map of N.E. Virginia showing forts and roads - (Washington D.C. metropolitan area)." (1871). U.S. Army Engineer School; Barnard, J. G. (John Gross); United States. Army. Corps Of Engineers. Library of Congress, Geography and Map Division, via Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:Index_map_for_sheets,_extract_of_military_map_of_N.E._Virginia_showing_forts_and_roads_-_(Washington_D.C._metropolitan_area)._LOC_88690556.jpg

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