- Leffel Water Wheel Company catalog, circa 1883.
- mdp.39015047630630-seq 39
- mdp.39015047630630-seq 40 RKFD ad
- mdp.39015047630630-seq 59
- PREFACE
- STYLE 24 with a Woodward Standard size 2 governor.
- The James Leffel & Company's book on dam history.
- The James Leffel & Company's factory history.
- The James Leffel & Company's factory history.
- The James Leffel & Company's factory history.
- The James Leffel & Company's factory history.
- The James Leffel & Company's factory history.
- The James Leffel & Company's factory history.
- The James Leffel factory picture in their catalog.
- The James Leffel Water Wheel Company history.