1974 Press Photo Prince Juan Carlos, with Arias and Rivera, signs declaration

Prince Juan Carlos de Borbon signs a joint U.S-Spanish declaration of principles on defensive cooperation Friday as his first act as Spain's provisional Chief of State. Watching are Spanish Premier Carlos Arias, right, and United States Ambassador Horatio Rivera, center. Signing took place in Madrid. (Other men in background are unidentified.)

Photo is dated 1974.

Photo measures 10 x 8 inches.