https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8061869Edit ImageSaveSaveEditCropCustom Text A World War II-era alert billboard outside the former K-25 uranium-enrichment plant, now a history museum, in Oak Ridge, Tennessee, a city with many secrets and a twist Original public domain image from Library of CongressMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 1200 x 800 px | 300 dpiLarge JPEG 3500 x 2333 px | 300 dpiBest Quality JPEG 8416 x 5611 px | 300 dpiTIFF 8416 x 5611 px | 300 dpi | 270.27 MBFree Download A World War II-era alert billboard outside the former K-25 uranium-enrichment plant, now a history museum, in Oak Ridge, Tennessee, a city with many secrets and a twist More