Orthophotography of 50 cm of the Autonomous Community of the Basque Country. Year 1956/57

The orthophotography 50 cm of spatial resolution has been generated from the photogrammetric flight carried out in the years 1956-57 by the Army Map Service of the United States, with the collaboration of the Spanish Air Force. The approximate scale of the flight is 1:32,000, and the frames are black and white. Information provided by the Ministry of Defence.