River bridge construction. Pile driver and a caterpillar-tracked tractor being used to drive support columns into a riverbed for a bridge that is under construction. This photograph,dating from 1942,is from the United States Office of War Information | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Library of Congress |
Taille de l’image : | 4577 px × 3833 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |