Boys’ Book of Railways, The. By J. R. Howden.

The author considers passenger and freight traffic separately, taking up the various articles of equipment and methods of operation. 14 to 18.

Boys’ Book of Steamships, The. By J. R. Howden.

The evolution and construction of the steamboat. 14 to 18.

Boys’ Book of Warships, The. By J. R. Howden.

Describes the machinery, construction, armament, and operation of all kinds of modern warships. 14 to 18.

Boy’s Second Book of Inventions, The. By Ray Stannard Baker.

Tells about radium, flying machines, electric furnaces, etc. 14 to 18.

Boy’s Workshop, The. By Harry Cragin.

Shows how to make various useful things. 14 to 16.