This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Alvin Barton Barber. en Colonel Alvin Barber railway engineer with the US Army Engineers later with the American Relief Administration and technical adviser to Poland loc gov Harris Ewing Collection Library of Congress other versions PDUSGov Rail transport staff United States Army officers Alumni of the United States Military