https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13958757Edit ImageSaveSaveEditCropCustom TextDoctor and Mrs Syntax, with other elderly people, taking laughing gas in the house of a tooth-drawer in Paris. Coloured aquatint, 1820.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 785 px | 300 dpiLarge JPEG 3300 x 2159 px | 300 dpiFree DownloadDoctor and Mrs Syntax, with other elderly people, taking laughing gas in the house of a tooth-drawer in Paris. Coloured aquatint, 1820.More