https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/441584Edit ImageSaveSaveEditCropCustom TextEngineers W. N. Gardner and C.A. Brown, Jr., check operations as Trailblazer 1b is readied for Flight, June 4, 1959. Original from NASA . Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 960 x 1200 px | 300 dpiLarge JPEG 2800 x 3500 px | 300 dpiBest Quality JPEG 3200 x 4000 px | 300 dpiTIFF 3200 x 4000 px | 300 dpi | 73.28 MBFree DownloadEngineers W. N. Gardner and C.A. Brown, Jr., check operations as Trailblazer 1b is readied for Flight, June 4, 1959. Original from NASA . Digitally enhanced by rawpixel.More