By Hawkins and Staff
A Practical Thesis. . Questions, answers and illustrations. A progressive course of study or engineers, electricians, students and those desiring to acquire a working knowledge of Electricity and its Applications. (1914) 425 pages.
By Samuel Edward Dibble
Head of Sanitary equipment and installation dept. Carnegie Institute of Technology. “The author has in mind the needs of young men having no technical instruction who are anxious to become proficient in the art of plumbing. (1918) 262 pages.
