SCIENTIFIC AMERICAN, New York, March 14, 1891 

* Heavy guns ordinance 
* Washington Navy Yard 

The front page has seven illustrations: "Manufacture Of Heavy Ordnance At The Washington Navy Yard", plus a report that concludes inside with two more illustrations. Other articles within the issue are: "Plate Flanging Machine for Marine Boiler Work"; "Libbey's Driving Device for Vehicles", "A Pneumatic Flying Machine", with additional articles and advertisements.

This is complete in 16 pages and is in very nice condition.