Making WWI map for the blind

Black and white photograph of a man making a map of Europe for the use of blind persons. The man uses a machine to engrave battle movements on the map.

Image caption: "HOW OUR BLIND BROTHERS FOLLOW THE ALLIED ADVANCE. / The National Society for the advancement of the blind has inaugurated special magazines and books especially printed for the blind to enable them to keep up to the minute during the present Allied offensive. A special edition has been prepared for use of the blind soldiers. Our photo shows the days' [sic] battle progress being recorded on the war map for the blind."

Image is from photo album 2006.33.3 which contains 52 images related to American and Allied soldiers.