https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13978342Edit ImageSaveSaveEditCropCustom TextThe 1904 World's Fair, St. Louis, Missouri: an air compressor manufactured by the Leyner Engineering Company of Denver, Colorado. Photograph, 1904.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 931 px | 300 dpiLarge JPEG 3000 x 2328 px | 300 dpiFree DownloadThe 1904 World's Fair, St. Louis, Missouri: an air compressor manufactured by the Leyner Engineering Company of Denver, Colorado. Photograph, 1904.More