Public domain photos

The image shows a piece of paper with a drawing of a curved line on it. The paper is white and the drawing is in black ink. The curved line is clearly visible and the text written on the paper is likely a description of the drawing.

The image shows a piece of paper with a drawing of a curved line on it. The paper is white and the drawing is in black ink. The curved line is clearly visible and the text written on the paper is likely a description of the drawing.Open in library