EnvironmentFebruary 1, 1935
Canalization of the Upper Mississippi River
Trunk-line Water Route From "Twin Cities" to New Orleans, 27 Dams With Locks Required, Cost 124,000,000 Dollars, Economic Gains
Stories by S. G. Roberts
TechnologyAugust 1, 1923
The Paper of the Future
Means, Ready to Hand, for Staving Off the Impending Famine in this Essential Material
EnvironmentApril 1, 1923
Tiny Air Bubbles and Giant Dams
How Air Jets Protect a Great Dam Against the Destructive Fields of Ice
The SciencesOctober 1, 1922
New Orleans' Big Port Improvement
Preparing for the Future World Trade of the Southern Metropolis
TechnologySeptember 1, 1922
An Automatic Hand on the Throttle
Principle and Features of the Sprague System of Automatic Train Control
The SciencesAugust 1, 1922
After Ashokan--What?
Doubling the World's biggest Water-Supply System to take care of the Future
TechnologyJuly 1, 1922
Pullman and Caboose Radio
The Pioneer Work of the Lackawanna Railroad in Applying Radio to the needs of Land Travel Roverts
The SciencesMay 1, 1922
The Industrial Production of Helium
Long Strides in the Past Five Years Toward the Non-Explosive Airship
EnvironmentJanuary 1, 1922
The Hydraulic Laboratory
A Prime Aid in Helping us to make the most of our Waterpower Resources
EnvironmentJanuary 29, 1921
Power in Big Packages
Some of the Economies to which we may look Forward if We Pool Our Fuel-Burning Plants
EnvironmentMay 8, 1920
Harnessing Our Waterpower
Why We Should Make the Most of Such Resources Within Our Boundaries
TechnologyMarch 13, 1920
Cutting Out a Railroad Hazard