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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Model making unites business men
327
CHICAGO society of model engineers
Electric locomotive is victor in tug-o'-war
332
Locomotives
Rail detectives victors in war on crime
336
Railroad detectives
Sacred cities to be linked by rail and wire
343
Railroads (Arab countries)
Ash piles are made to yield millions
345
Manuscripts (Conservation and restoration)
Chicle quest beats highway to tropics
408
Chewing gum
Loading ships on difficult shores
414
Loading and unloading
What trees are best for town and city?
418
Trees in cities
Photo press rivals speed of printing
424
Photography (Developing and developers)
Great bat cave is made part of national park system
427
Carlsbad Caverns National Park (N.M.)

Cable car with step-up seats climbs mountain
352
Cableways
Back o' the yards where wild West is still seen every day
354
Cowboys, Chicago (Ill.) (Stockyards)
Abraham Lincoln an inventor, patent records reveal
360
Abraham Lincoln (American president.); 1809-1865
Desert secrets bared by modern magic rug
368
Francis Marion Smith; 1846-1931, Deserts
Tunnel under roof-o'-world to enrich nation
380
Moffat Tunnel (Colo.)
Stage wonders work of hidden toilers
384
Theater (Stage machinery)
Making paste jewels grows into thriving business
387
Precious stones, Artificial
Testing black diamonds by the spoonful
390
Coal (Analysis)
Electric seagoing dredges are built by army
394
Dredging machinery
Schooling minds to direct skill of hands
395
Vocational education
From the stone age to wallpaper
402
Wallpaper and wallpapering
Man-made quakes test building's stability
406
Earthquakes and building

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