SCIENTIFIC AMERICAN, New York, September 2, 1893  The front cover has "The World's Columbian Exposition - The Great German Search Light" with an accompanying article.  Inside the issue is: "The World's Columbian Exposition - Bilgram's Exhibit of Cut Bevel Gear Wheels"; "...State Buildings"; "The New Protected Cruiser Detroit"; and more illustrations, articles and advertisements. 
Complete in sixteen pages, in very good condition.