Public domain photos

The image shows a page from a manuscript with a drawing of a ring on it, surrounded by text and color palettes. The text appears to be a color control patch, with a variety of colors arranged in a circular pattern around the ring.

The image shows a page from a manuscript with a drawing of a ring on it, surrounded by text and color palettes. The text appears to be a color control patch, with a variety of colors arranged in a circular pattern around the ring.Open in library