The Roosevelt Deep Drainage Tunnel Finished

The History of the War, The Trans-Atlantic Flight and more

The Prevention and Cure of Hookworm

Causes and Extent of the Infection, and. How It Is Being Stamped Out

Hunting Submarines with a Sound Detector

American Invention That Played an Important Role in the War Against the U-Boat

Reconstruction in Europe--VI

The Status of the British Railways

Exploring by Airplane

Some Opinions on the Possibilities of Winged Exploration Parties of the Near Future

America's Great Effort in Ordnance--I

Supplying Our Two Million Men in France with Artillery, Machine Guns and Rifles

U. S. S. "New Mexico"

A Description of the World's First Electrically Propelled Battleship

Foreign Trade in Furniture

Fuel from Household Waste, Storage of Coal Under Water and more