Public domain photos

The image shows a green postage stamp with the words "Doctors Mayo" printed on it, along with a picture of a person. The stamp is from the United States of America and was mint never hinged (MNH) with a value of $5.00.

The image shows a green postage stamp with the words "Doctors Mayo" printed on it, along with a picture of a person. The stamp is from the United States of America and was mint never hinged (MNH) with a value of $5.00.Open in library