That eching was done by my father, a well known etcher and architect. Most of his work was Baltimore based but certainly not all. He did the white house christmas card for president Hoover one year. He died in Baltimore in January of 1967. You have a collectors item. My dad's work is in the Baltimore Museum of Art, the Corchoran, the Walters. Permanent displays of his can be found at the Lyric theater in Baltimore and the University of Baltimore.