https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12320389Edit ImageSaveSaveEditCropCustom TextRobert Pierce, school principal, directs a science class making experiments with soils, Gees Bend, Alabama. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 838 px | 300 dpiLarge JPEG 3500 x 2443 px | 300 dpiBest Quality JPEG 4341 x 3030 px | 300 dpiTIFF 4341 x 3030 px | 300 dpi | 25.09 MBFree DownloadRobert Pierce, school principal, directs a science class making experiments with soils, Gees Bend, Alabama. Sourced from the Library of Congress.More