Scientific American Year 1921 Magazine Back Issues

Features
In This Issue: Power In Big Package The Mississippi's Mouth
A Weekly Review Of Progress In
Industry Science, Invention, Mechanics

Features
In This Issue: Winged Transportation That Moon Rockey Proposition
A Weekly Review Of Progress In
Industry Science, Invention, Mechanics

Features
In This Issue: Canada's Superpower Zone Railroad Accidents And Their Cause
A Weekly Review Of Progress In
Industry Science, Invention, Mechanics

Features
In This Issue: The Sailing Ships Return Milk Without Cows
A Weekly Review Of Progress In
Industry Science, Invention, Mechanics

Features
In This Issue: Our Tropical Timber Trade A New Era In Wireless
A Weekly Review Of Progress In
Industry, Science, Invention, Mechanics

Features
In This Issue: Canada's Catay Ship Canal Tricks Of Traffic Control
A Weekly Review Of Progress In
Industry, Science, Invention, Mechanics

Features
The Weekly Journal Of Practical Information
New York, July 1921

Features
In This Issue: The Story Of The Rail Japanese Vineer Papers
A Weekly Review Of Progress In
Industry Science, Invention, Mechanics

Features
In This Issue: A Bridge Building Record
How Much Water For The Crops?
Industry, Science, Invention, Mechanics

Features
The Weekly Journal Of Practical Information
New York, October 1921

Features
The Monthly Journal Of Practical Information
New York, November 1921

Features
The Monthly Journal Of Practical Information
New York, December 1921
Passengers Carried
Passenger Cars