Minnesota Historical Aerial Photographs Online (MHAPO)

The points in this dataset represent the approximate geographic location of the centroids for scanned, non-georeferenced air photos that were captured between 1923 and 2007 and are freely available via the John R. Borchert Map Library and the Minnesota Department of Natural Resources.<br/><br/>The images were captured by a variety of government entities to address a wide range of applications. Images were scanned at resolutions ranging from 150 to 1200DPI. The collection includea a mixture of black & white, true color and infrared photographs. Various image collects were taken at a range of flight heights depending on the year and purpose of the collect.

Additional Info

Field Value
Last Updated November 3, 2017, 10:02
Created September 22, 2015, 10:02
dsAccessConst None
dsCurrentRef Time Period of Content date indicates the date which the user can be confident of accuracy and completeness of the dataset.
dsMetadataUrl ftp://ftp.gisdata.mn.gov/pub/gdrs/data/pub/edu_umn/base_historical_aerial_points/metadata/metadata.html
dsModifiedDate 2017-11-03 00:09:47
dsOriginator John R. Borchert Map Library, University of Minnesota and Minnesota Department of Natural Resources (MNDNR)
dsPeriodOfContent 9/3/2015
dsPurpose This point index can be used for spatial and temporal queries and subsequent retrieval of the scanned airphotos that are available on-line from the John R. Borchert Map Library and MNDNR. The atribute table includes a web link for each image centroid to corresponding online airphoto download page.

Dataset extent