https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13999718Edit ImageSaveSaveEditCropCustom TextTwo couples are dancing the polka and two children are following the same steps watched by their elders. Engraving, 184-.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 575 px | 300 dpiLarge JPEG 3500 x 1679 px | 300 dpiBest Quality JPEG 3820 x 1832 px | 300 dpiFree DownloadTwo couples are dancing the polka and two children are following the same steps watched by their elders. Engraving, 184-.More