Metadata for Montana Historic Imagery (Mid 20th Century) Image Service Metadata for Montana Historic Imagery (Mid 20th Century) Image Service
Identification Information:
Citation:
Originator: U.S. Geological Survey / University of Montana
Publication date: 2023
Title: Montana Historic Imagery (Mid 20th Century) Image Service
Publication place: Montana
Publisher: Montana State Library
Online linkage: https://gisservicemt.gov/arcgis/rest/services/MSL/Historic_Imagery_Mid20thCentury/ImageServer

Abstract:
Historical aerial images from the USGS Single Frame Archive (SFA) were used to generate a continuous orthoimage for Montana. The source imagery spans the 1940s to the 1970s, with most imagery drawn from the 1940s and 1950s. The grayscale imagery is delivered as single-band cloud-optimized GeoTIFFs (COGs). Each COG tile is bundled with metadata and can be downloaded as a zip archive. The orthoimagery product is divided into 174 seamless tiles. Each tile is roughly 3.5 GB to 4.5 GB in size. Tiles are named using a row and column number. To find a tile corresponding to a specific location, consult the TILE_INDEX.pdf file in this archive or use tile_index.shp in a GIS. Each image tile is bundled with a shapefile that shows the source imagery seamlines, project name, image acquisition date, and entity id. Use the entity id or project name to search for the source imagery and additional metadata at
the USGS archive (https://earthexplorer.usgs.gov/). Learn more about the USGS
Single Frame Archive at https://www.usgs.gov/centers/eros/science/usgs-eros-archive-aerial-photography-aerial-photo-single-frames
View this imagery on a map without a GIS in the Landscape Explorer website: https://www.landscapeexplorer.org/
The web service for the entire area is also accessible here: https://stream.landscapeexplorer.org/wmts.xml Instructions for using the services are here: https://www.landscapeexplorer.org/data/#streamtodesktop

Image Dates: https://montana.maps.arcgis.com/home/item.html?id=48101174174243aaaaba3d55920b9312

Tile Index: https://montana.maps.arcgis.com/home/item.html?id=f2136a350af148d0acc38b3b0c13c2f6

Time period of content:
Beginning date: 01/01/1940
Ending date: 12/31/1979
Currentness reference: ground condition
Access constraints: None
Use constraints:
This work is licensed under the Creative Commons Attribution-NonCommercial 4.0
International License (CC BY-NC 4.0). To view a copy of this license, visit
http://creativecommons.org/licenses/by-nc/4.0/
Data are provided "as is" without warranty of any kind, express or implied.
Point of contact:
Scott Morford
University of Montana
Missoula, MT 59812


Telephone: 406-443-5522
E-Mail: scott.morford@mso.umt.edu


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Distribution Information:
Distributor:
Scott Morford
University of Montana
Missoula, MT 59812


Telephone: 406-443-5522
E-Mail: scott.morford@mso.umt.edu


Resource description: Live Data and Maps


Distribution liability:
This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/4.0/ Data are provided "as is" without warranty of any kind, express or implied.

Standard order process:
Digital form:
Format name: Raster
megabytes
Online option:
https://www.landscapeexplorer.org/
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Metadata Reference Information:
Metadata date: 03/01/2022
Metadata contact:
Montana State Library
PO Box 201800
Helena, MT 59620-1800


Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov


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