- JUNE 1887. PAGE 2.
- PAGE 1. PRINTED IN 1887 BY THE JAMES LEFFEL & COMPANY.
- JAMES LEFFEL & COMPANY, CIRCA 1888.
- Published by the James Leffel & Company.
- A hydroelectric power plant history project.
- THE JAMES LEFFEL & COMPANY HISTORY PROJECT.
- Amos Woodward's smallest water wheel governor manufactured.
- A Vintage machine shop manufacturing history project.