The SciencesApril 25, 1914
Evolution of the Breech-Loader
The Origin of Fire Arms Dates Back to Remote Antiquity
Stories by Alex. Del Mar
The SciencesDecember 6, 1913
Future Prices of Commodities and Materials, A Dished Disk Stabilizer and more
Formerly Chief of Bureau of Commerce and Navigation, United States Treasury
The SciencesAugust 19, 1905
Inventions of Ancient Rome: Some Forerunners of Modern Ingenuity
The SciencesMay 6, 1905
Our Heritage of the Mechanical Arts.--III
The SciencesApril 29, 1905
Our Heritage of the Mechanical Arts--II
The SciencesApril 22, 1905
Our Heritage of the Mechanical Arts