https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12277289Edit ImageSaveSaveEditCropCustom TextThe "tunnel," an underground passageway thru which all baggage and mail is handled. Municipal airport, Washington, D.C.. 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 920 px | 300 dpiLarge JPEG 3500 x 2682 px | 300 dpiBest Quality JPEG 13999 x 10727 px | 300 dpiTIFF 13999 x 10727 px | 300 dpi | 286.65 MBFree DownloadThe "tunnel," an underground passageway thru which all baggage and mail is handled. Municipal airport, Washington, D.C.. Sourced from the Library of Congress.More