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File:Photocopy of a drawing (original in the Collection of the PLandC, Shelf 117, Drawing 341) PLAN AND ELEVATION OF PIPEING (sic) TO RAISE AND LOWER GUARD LOCKS HYDRAULIC GATES, HAER MASS,9-LOW,9A-1.tif

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English: Photocopy of a drawing (original in the Collection of the PLandC, Shelf 117, Drawing 341) PLAN AND ELEVATION OF PIPEING (sic) TO RAISE AND LOWER GUARD LOCKS HYDRAULIC GATES, FEBRUARY, 1947 - Pawtucket Canal, Guard Locks, Lowell, Middlesex County, MA Merrimack Manufacturing Company; Francis, J B; Proprietors of the Locks and Canals on the Merrimack River; Jackson, Jonathan; Tyler, Joseph; Clark, Thomas; Boott, Kirk; Lewis, Joel; Boyden, Uriah; Jackson, Patrick Tracy; Hawley, Monica E, transmitter; Boucher, Jack, photographer; Scurci, Louis R, delineator; Ventsch, Leslie, delineator; Conner, Michael F, delineator; Malone, Patrick M, historian
Date Documentation compiled after 1968
Source Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA https://www.loc.gov/pictures/item/ma1174.photos.080775p
Credit line
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.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

Permission
(Reusing this file)
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 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.
 Geotemporal data
Map location Massachusetts; Middlesex County; Lowell
Scale 1:1600
Heading
Bounding box
N: 42.6487114°N
W: 71.3223342°W E: 71.2965608°W
S: 42.6261743°N
Georeferencing View the georeferenced map in the Wikimaps Warper
 Bibliographic data
Part of the series 123
Map sheet 2792
 Archival data
Accession number
HAER MASS,9-LOW,9A-1
Dimensions height: 37 in (93.9 cm); width: 24 in (60.9 cm)
dimensions QS:P2048,37U218593
dimensions QS:P2049,24U218593
Notes
  • Significance: The Guard Locks were the first set of locks constructed in the Lowell System which are still in existence. They have, however, been altered and added to since first put into use. The Guard Locks complex now includes not only the locks, but also a sluice gatehouse dating from 1870, a navigation lock gatehouse (1881), and the Great (or Francis) Gate, a portcullis-type gate constructed in 1848-50 to keep flood waters from entering the canal system.
  • Unprocessed Field note material exists for this structure: FN-3
  • Survey number: HAER MA-2-A
  • Building/structure dates: 1792- 1796 Initial Construction
  • Building/structure dates: 1798 Subsequent Work
  • Building/structure dates: 1803 Subsequent Work
  • Building/structure dates: 1822-1823 Subsequent Work
  • Building/structure dates: 1832 Subsequent Work
  • Building/structure dates: 1839 Subsequent Work
  • Building/structure dates: 1848-1850 Subsequent Work
  • Building/structure dates: 1870 Subsequent Work
  • Building/structure dates: 1881-1900 Subsequent Work

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current18:41, 21 July 2014Thumbnail for version as of 18:41, 21 July 20143,162 × 5,000 (15.08 MB)Fæ (talk | contribs)GWToolset: Creating mediafile for Fæ. HABS 20 July 2014 (1401:1600)

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