https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13971782Edit ImageSaveSaveEditCropCustom TextM0001605: Photograph of two men in the bough of a cinchona tree using a pulley to collect cinchona seedsOriginal public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 753 x 1200 px | 300 dpiLarge JPEG 1084 x 1728 px | 300 dpiFree DownloadM0001605: Photograph of two men in the bough of a cinchona tree using a pulley to collect cinchona seedsMore