https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8683897Edit ImageSaveSaveEditCropCustom TextWhile on vacation, be careful not to discuss classified information. (1963) American poster. Original public domain image from the Library of Congress. Digitally enhanced by rawpixel.MorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1033 x 1200 px | 300 dpiLarge JPEG 3013 x 3500 px | 300 dpiBest Quality JPEG 5983 x 6951 px | 300 dpiTIFF 5983 x 6951 px | 300 dpi | 238 MBFree DownloadWhile on vacation, be careful not to discuss classified information. (1963) American poster. Original public domain image from the Library of Congress. Digitally enhanced by rawpixel.More