Stories by Warren O. Rogers

The SciencesNovember 26, 1910

Modern Rotary Steam Engines

Some New Forms of Prime Movers

Warren O. Rogers

The SciencesJanuary 8, 1910

Friction Drums and Brakes

Hoisting-Engine Essentials

Warren O. Rogers

The SciencesAugust 14, 1909

A Visit to an Anthracite Coal Mine

Warren O. Rogers