https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13993775Edit ImageSaveSaveEditCropCustom TextFour men are out in a boat on the river, two are standing up in it having a discussion. Etching by S. Fokke.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 811 x 1200 px | 300 dpiLarge JPEG 1584 x 2345 px | 300 dpiFree DownloadFour men are out in a boat on the river, two are standing up in it having a discussion. Etching by S. Fokke.More