20250206140050001.0FALSECalculateField Digital_Index_Aerial_Photographs_of_Johnstown_Flood_1977 Frame "str(!Roll!) + "-" + str(!Exp!)" PYTHON3 # TEXT NO_ENFORCE_DOMAINSRename "Y:\Data\State\PA\2022_AerialPhotoScanning\Johnstown 1977-1978\JohnstownFlood_1977_NA\Center Point Index\Digital_Index_Aerial_Photographs_of_Johnstown_Flood_1977.shp" "Y:\Data\State\PA\2022_AerialPhotoScanning\Johnstown 1977-1978\JohnstownFlood_1977_NA\Center Point Index\Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977.shp" ShapeFileMerge Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977;Center_Point_Index_Aerial_Photographs_of_Johnstown_1978 "Y:\Data\State\PA\2022_AerialPhotoScanning\Johnstown 1977-1978\Collection Center Point Index\Collection_Center_Point_Index_Aerial_Photographs_of_Johnstown_1977_1978.shp" "Roll "Roll" true true false 10 Long 0 10,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Roll,-1,-1,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Roll,-1,-1;Exp "Exp" true true false 10 Long 0 10,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Exp,-1,-1,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Exp,-1,-1;Frame "Frame" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Frame,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Frame,0,253;Year "Year" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Year,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Year,0,253;Date "Date" true true false 8 Date 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Date,-1,-1,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Date,-1,-1;FileName "FileName" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,FileName,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,FileName,0,253;URL "URL" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,URL,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,URL,0,253;Collection "Collection" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Collection,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Collection,0,253;Location "Location" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Location,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Location,0,253;Resolution "Resolution" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Resolution,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Resolution,0,253;X "X" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,X,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,X,0,253;Y "Y" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Y,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Y,0,253;Focal "Focal" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Focal,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Focal,0,253;Altitude "Altitude" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,Altitude,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,Altitude,0,253;GSD "GSD" true true false 254 Text 0 0,First,#,Center_Point_Index_Aerial_Photographs_of_Johnstown_Flood_1977,GSD,0,253,Center_Point_Index_Aerial_Photographs_of_Johnstown_1978,GSD,0,253" NO_SOURCE_INFO MANUAL_EDITCollection_Center_Point_Index_Aerial_Photographs_of_Johnstown_1977_1978665873.981900699419.3971004446407.4300004484939.86200010.016file://\\nomad.blue.psu.edu\GISlibrarian\Data\State\PA\2022_AerialPhotoScanning\Johnstown 1977-1978\Collection Center Point Index\Collection_Center_Point_Index_Aerial_Photographs_of_Johnstown_1977_1978.shpLocal Area Network002ProjectedGCS_WGS_1984Linear Unit: Meter (1.000000)WGS_1984_UTM_Zone_17N<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.4.0'><WKT>PROJCS[&quot;WGS_1984_UTM_Zone_17N&quot;,GEOGCS[&quot;GCS_WGS_1984&quot;,DATUM[&quot;D_WGS_1984&quot;,SPHEROID[&quot;WGS_1984&quot;,6378137.0,298.257223563]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Transverse_Mercator&quot;],PARAMETER[&quot;False_Easting&quot;,500000.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-81.0],PARAMETER[&quot;Scale_Factor&quot;,0.9996],PARAMETER[&quot;Latitude_Of_Origin&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,32617]],VERTCS[&quot;unknown&quot;,VDATUM[&quot;unknown&quot;],PARAMETER[&quot;Vertical_Shift&quot;,0.0],PARAMETER[&quot;Direction&quot;,1.0],UNIT[&quot;Meter&quot;,1.0]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>450445547.3910538</XYScale><ZOrigin>-306.01252350000095</ZOrigin><ZScale>4194304001953.124</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>32617</WKID><LatestWKID>32617</LatestWKID></ProjectedCoordinateSystem>202506061508470020250609130506001500000005000FGDC20250609ArcGIS Metadata1.0Aerial Photographs of Johnstown 1977-19782025-01-24T00:00:00vector digital dataDonald W. Hamer Center for Maps and Geospatial InformationPenn State University Libraries1 Pattee LibraryUniversity ParkPA 16802ul-maps@lists.psu.eduUS814-863-0094Donald W. Hamer Center for Maps and Geospatial Information<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>This collection of historic aerial photographs contains two missions taken in 1977 and 1978, respectively. The 1977 mission was captured by L. Robert Kimball, Consulting Engineers, Ebensburg, Pennsylvania at 1”=500’ scale and contains 331 photos. The 1978 mission was captured on October 31</SPAN></SPAN><SPAN><SPAN>st</SPAN></SPAN><SPAN>, 1978 at a scale of 1:24,000 and contains 84 photos. This collection was given to the Donald W. Hamer Center for Maps and Geospatial Information by the PA Department of Conservation and Natural Resources, Bureau of Geological Survey Library. The photos were scanned at 800 dpi on an Epson Expression 11000 scanner by the Donald W. Hamer Center for Maps and Geospatial Information. </SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN>Approximate historic aerial photo center points were generated by </SPAN><SPAN><SPAN>staff of the </SPAN></SPAN><SPAN>Donald W. Hamer Center for Maps and Geospatial Information (https://libraries.psu.edu/maps). Photos were aligned and georeferenced in three dimensions using Agisoft Metashape using a minimum number of ground control points, typically between 5 and 12 depending on the size of the project. Estimates of each camera pose, including geographic coordinates, were then exported as a center point index to the historic aerial photography collection. This center point index is intended to facilitate discovery and access, but not for research purposes. Where photography collections facilitated the generation of high-quality seamless mosaics, these were produced to common research standards and made available along with center point indexes. Please use orthomosaics for measurement, comparison with imagery of other time-periods and other common tasks performed in a geographic information system (GIS). </SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN /><SPAN>For more information on the methods used to generate center point indexes, orthomosaics, and/or to cite this work please see the following reference: </SPAN><SPAN>Nathan B. Piekielek, Grace Brittany Waltemate and Karen Schuckman (2022) Evaluating Software Tools to Orthorectify Archival Aerial Photographs, Journal of Map and Geography Libraries, 18:3, 209-229, DOI: </SPAN><SPAN>10.1080/15420353.2023.2219257</SPAN></P></DIV></DIV></DIV>Not Georeferenced. Historic aerial photographs of Pennsylvania.ISO 19115 Topic CategoriesimageryBaseMapsEarthCoverimageryBaseMapsEarthCoverdigital image mapaerial photographimageryBaseMapsEarthCoverimageryBaseMapsEarthCoverdigital image mapaerial photograph<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The User shall save the Commonwealth harmless from any suits, claims or actions arising out of the use of the data files or accompanying documentation, or arising out of any defect in the data files or accompanying documentation. The Commonwealth excludes any and all implied warranties and makes no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability, and fitness for a particular purpose. These data files and documentation are provided AS IS and the User assumes the entire risk as to their quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.</SPAN></P></DIV></DIV></DIV>Esri ArcGIS 13.4.0.554051977-19781977-01-01T00:00:001978-10-31T00:00:000.0000001535.458600Donald W. Hamer Center for Maps and Geospatial InformationPenn State University Libraries1 Pattee LibraryUniversity ParkPA 16802ul-maps@lists.psu.eduUS814-863-0094Donald W. Hamer Center for Maps and Geospatial InformationDonald W. Hamer Center for Maps and Geospatial InformationPennsylvania Spatial Data AccessThe Pennsylvania State UniversityThe Pennsylvania Geospatial Data Clearinghouse115 Land and Water BuildingUniversity ParkPA16802pasda@psu.eduUS814-863-01041-79.052513-78.64693240.49860040.144361376Aerial Photographs of Johnstown 1977-1978Feature Class376FIDInternal feature number.EsriSequential unique whole numbers that are automatically generated.FIDOID400ShapeFeature geometry.EsriCoordinates defining the features.ShapeGeometry000RollRollInteger10100ExpExpInteger10100FrameFrameString25400YearYearString25400DateDateDate800FileNameFileNameString25400URLURLString25400CollectionCollectionString25400LocationLocationString25400ResolutionResolutionString25400XXString25400YYString25400FocalFocalString25400AltitudeAltitudeString25400GSDGSDString25400Shapefile0.016datasetEPSG9.8.8(3.0.1)SimpleFALSE376TRUETRUEDonald W. Hamer Center for Maps and Geospatial InformationPenn State University Libraries1 Pattee LibraryUniversity ParkPA 16802ul-maps@lists.psu.eduUS814-863-0094