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Is Peace Unconstitutional?, Jellicoe at Jutland and more

America's Optical Emancipation

How a Dreamer of 66 Years' Standing Has Seen His Vision Realized

By Hugh A. Smith

The French Problem of Reconstruction II

Thirteen Billion Dollars' Worth of Physical Damage

By C. H. Claudy

Increasing Visibility Through a Knowledge of Camouflage

Suggestion of Permanent Peace-Time Value Drawn from the Efforts to Make Ships Invisible

By Robert G. Skerrett

The Invention that Won the War

How the Tank Idea Was Conceived and Progressively Worked Out

Our Latest Dreadnought "Idaho"

One of Five U. S. Ships Which Are the Most Completely Protected Warships Afloat

World Markets for American Manufactures

A department devoted to the extension of American trade in foreign lands

By Lynn W. Meekins

Giant Monoplane Flying Boat--Count Zeppelin's Last Production, Gluing Veneer-at Higher Moisture


  • Departments

    The Heavens in May, 1919

  • Inventions New and Interesting - May 3, 1919

  • Recently Patented Inventions - May 3, 1919

  • New Books, Etc. - May 3, 1919

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