https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12307850Edit ImageSaveSaveEditCropCustom TextFrederick, Maryland. A student pilot removing burrs from Greaseball, a mascot at the Stevens Airport. 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 1177 x 1200 px | 300 dpiLarge JPEG 3434 x 3500 px | 300 dpiBest Quality JPEG 4865 x 4959 px | 300 dpiTIFF 4865 x 4959 px | 300 dpi | 46.02 MBFree DownloadFrederick, Maryland. A student pilot removing burrs from Greaseball, a mascot at the Stevens Airport. Sourced from the Library of Congress.More