https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/2288462Edit ImageSaveSaveEditCropCustom TextThe 1950s historical photograph of an extreme air pollution event at Salt Lake City, Utah. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFLandscape Card 7 x 5" JPEG 2000 x 1429 px | 300 dpiLarge JPEG 2982 x 2130 px | 300 dpiLandscape Card 7 x 5" TIFF 2000 x 1429 px | 300 dpiBest Quality TIFF 2982 x 2130 px | 300 dpi | 36.39 MBFree DownloadThe 1950s historical photograph of an extreme air pollution event at Salt Lake City, Utah. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.More