https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14019378Edit 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 778 x 1200 px | 300 dpiLarge JPEG 1110 x 1712 px | 300 dpiFree DownloadM0001605: Photograph of two men in the bough of a cinchona tree using a pulley to collect cinchona seedsMore