https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13987348Edit ImageSaveSaveEditCropCustom TextThe Pedro Miguel Locks, Panama Canal construction: view of train tracks, looking south from west. Photograph, 1907.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 991 px | 300 dpiLarge JPEG 2921 x 2412 px | 300 dpiFree DownloadThe Pedro Miguel Locks, Panama Canal construction: view of train tracks, looking south from west. Photograph, 1907.More