Wikipedia:WikiProject Soil/PD image sources

Soil images needing upload to Commons
WikiCommons upload link. Ideally photos would be converted to a lossless PNG format using a program like GIMP and diagrams would be converted to an SVG format.
 * http://soils.usda.gov/technical/handbook/ Example:
 * http://soils.usda.gov/technical/handbook/contents/part618p5a.html
 * http://soils.usda.gov/technical/manual/ Especially:
 * http://soils.usda.gov/technical/manual/figures.html
 * ftp://ftp-fc.sc.egov.usda.gov/NSSC/Field_Book/FieldBookVer2.pdf
 * ftp://ftp-fc.sc.egov.usda.gov/NSSC/Hydric_Soils/FieldIndicators_v6_0.pdf
 * http://soils.usda.gov/gallery/photos/profiles/
 * http://photogallery.nrcs.usda.gov/