https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14012107Edit 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 846 x 1200 px | 300 dpiLarge JPEG 2468 x 3500 px | 300 dpiBest Quality JPEG 3989 x 5656 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