65 Years
- Burchfield, Craig Q
- Robbins, Howard W
- Storm, Theodore J
- Thomas, Kenneth M
60 Years
- Bauer, Vernon T
- Claussen, David J
- Ermels, Bernard J
- Franke, Marvin E
- Fuller Jr, Norman D
- Kilzer, Paul L
55 Years
- Chamberlain Jr, John H
- Dickerson, George L
- Laver, Kenneth E
- Martin, Dennis D
- Tschantz, John R
- Wertz Jr, Harry F
50 Years
- Boller, James D
- Christiansen, Jr., Vannard
- Diehl, William W
- Stephenson, Charles J
- Tedrow, Richard F
- Thomas, Fred A
- Zemke, Dennis O
