https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13986590Edit ImageSaveSaveEditCropCustom TextAn opium den in San Francisco, early 20th century, with two Chinese men smoking. Process print after a photograph.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 956 px | 300 dpiLarge JPEG 3152 x 2512 px | 300 dpiFree DownloadAn opium den in San Francisco, early 20th century, with two Chinese men smoking. Process print after a photograph.More