https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12244277Edit ImageSaveSaveEditCropCustom TextBoston and Maine railroad shops at Billerica, Massachusetts. Welder using special flame to melt only head of rivet so it can be removed without burning other metal of car. 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 876 px | 300 dpiLarge JPEG 3500 x 2554 px | 300 dpiBest Quality JPEG 8865 x 6469 px | 300 dpiTIFF 8865 x 6469 px | 300 dpi | 109.4 MBFree DownloadBoston and Maine railroad shops at Billerica, Massachusetts. Welder using special flame to melt only head of rivet so it can be removed without burning other metal of car. Sourced from the Library of Congress.More