David Rumsey
ArcGIS, QGIS or web apps can simply use this map with web map services. WMTS, TileJSON or XYZ tiles are provided for quick access to processed maps.
Sign in to get links.
Sign in to download GeoTIFF.
Overlay & compare
iiif viewer, iiif info json
Website
Frequency of Precipitation. Atlas of American Agriculture.
5797.051
pilot4
Relative Frequency of Precipitation for (May, June, July, August) Less than Half the Average. Atlas of American Agriculture. FJM.
1922
1936
Kincer, Joseph Burton
U.S. Department of Agriculture
62 × 48 cm
1 : 17000000