topic

• Technology5
• Caloric content1
• Food1
• Railroad tunnels1
• More Less

collection

• Scientific American5

place

• Chicago (Ill.)1
• New York (N.Y.)1
• New York (State)1
• Saint Clair Tunnel (Mich. and Ont.)1

genre

• Magazine covers4
• Prints1

publisher

division

• General Research Division5

type

• still image5
• text1