EnvironmentAugust 24, 1912
Teaching the Farmer How to Use Electricity
A Circus Tent display of Farm Apparatus by a Central Station Company
Stories by Thomas Commerford Martin
The SciencesJanuary 13, 1912
Francis Bacon Crocker
An Educator Who is Also an Inventor Engineer
The SciencesOctober 21, 1911
Frank Julian Sprague
Inventor and Engineer
The SciencesSeptember 9, 1911
Bion Joseph Arnold
An Engineer Who Is the Right-hand Man of Public Service Commissions