Public domain photos

The image shows a black and white drawing of various types of boxes on a paper. The boxes are arranged in a neat pattern, with some of them overlapping each other. The paper has some writing on it, though it is not clear what it says.

The image shows a black and white drawing of various types of boxes on a paper. The boxes are arranged in a neat pattern, with some of them overlapping each other. The paper has some writing on it, though it is not clear what it says.Open in library