https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12295327Edit ImageSaveSaveEditCropCustom TextPittsburgh, Pennsylvania. A warning on a board in the drivers' room at the Greyhound garage. 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 952 px | 300 dpiLarge JPEG 3500 x 2777 px | 300 dpiBest Quality JPEG 4096 x 3250 px | 300 dpiTIFF 4096 x 3250 px | 300 dpi | 12.7 MBFree DownloadPittsburgh, Pennsylvania. A warning on a board in the drivers' room at the Greyhound garage. Sourced from the Library of Congress.More