https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12301963Edit ImageSaveSaveEditCropCustom TextDr. Ernest W. Reid, Assistant Chief, Chemical and Allied Products. Formerly Senior Industrial Fellow, Mellon Institute. 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 927 x 1200 px | 300 dpiLarge JPEG 2702 x 3500 px | 300 dpiBest Quality JPEG 4164 x 5393 px | 300 dpiTIFF 4164 x 5393 px | 300 dpi | 21.44 MBFree DownloadDr. Ernest W. Reid, Assistant Chief, Chemical and Allied Products. Formerly Senior Industrial Fellow, Mellon Institute. Sourced from the Library of Congress.More