https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14000385Edit ImageSaveSaveEditCropCustom TextVoice building and tone placing : showing a new method of relieving injured vocal cords by tone exercises / by H. Holrook Curtis.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 864 px | 300 dpiLarge JPEG 3500 x 2520 px | 300 dpiBest Quality JPEG 7825 x 5634 px | 300 dpiFree DownloadVoice building and tone placing : showing a new method of relieving injured vocal cords by tone exercises / by H. Holrook Curtis.More