Popular Mechanics

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Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
 

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Automatic skippers of the skyways
1
Aviation equipment
First mail pilots fly old trail in big liners
5
Air mail service
Brain dynamos produce mind doctor says
8
Brain, Electrophysiology
Top lubes, latest aid to motorists
10
Gasoline, Lubrication and lubricants
Sparks to the rescue
18
Life saving, Radiotelephone on ships, boats, etc

Colorado's runaway mountain
29
Landslides (Colorado), Mountains
New tone quality given music sent by wire
34
Loudspeakers, Telephone (Musical use)
Chasing weather in the sky
36
Aviation (Altitude flying), Weather forecasting
Automatic gear shift simplifies auto driving
43
Automobiles (Gearing)
Glimpses of the World's fair
45
Century of Progress International Exposition (1933-1934: Chicago, Ill.)
Army on wheels
50
United States Army Cavalry, UNITED STATESArmy/Mechanized force
Magic-ray farmers
58
Plants (Breeding), PLANTS, Effect of X rays on
Why cotton is still king
66
Cotton
Chaining the earthquake giant
76
Earthquakes
Short cuts for auto campers
82
Automobiles (Camping equipment)

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