https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12284937Edit ImageSaveSaveEditCropCustom Text[Untitled photo, possibly related to: Completed drilling machine. Keystone drilling machine. Keystone Drilling Company, Beaver Falls, Pennsylvania]. 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 918 px | 300 dpiLarge JPEG 3500 x 2677 px | 300 dpiBest Quality JPEG 13920 x 10645 px | 300 dpiTIFF 13920 x 10645 px | 300 dpi | 282.86 MBFree Download[Untitled photo, possibly related to: Completed drilling machine. Keystone drilling machine. Keystone Drilling Company, Beaver Falls, Pennsylvania]. Sourced from the Library of Congress.More