Matted and reading for framing. Exceptional examples. 1868 Print. Five prints labeled plate 1-5, matted to about 9 3/4 x 6 1/4 each on a single mat measuring 23 1/4 x 30. Prints depict ancient fortresses, various well-labeled diagrams of star shaped fortifications, dissected views of coastal defensive batteries, and other details of siege and artillery warfare. Several are labeled 'Vol. 6' in the lower left-hand corner, indicating this was a series of prints appearing in the same book, likely an encyclopedia.