Mailing Address P.O. Box 601105 Sacramento, CA 95860-1105
Using this great page from UtahRails.net as a reference tells us this about General Motors model PD-4106’s:
The model number does not tell us about the General Motors powertrain (engine/transmission).
The PD-4106 was General Motors’ first production bus with the 8V-71 engine; 3,226 were produced from 1961 to 1965, 1,105 of those for Greyhound.
This General Motors PD-4106 was delivered new to Las Vegas-Tonopah-Reno (LTR) Stage Line in 1964.
The bus was donated to the PBM in 1996 along with the five other buses of Richard Twining’s historical bus collection.
4-Speed Manual, General Motors, General Motors, GM Truck & Coach Division, Intercity Coach, Las Vegas-Tonopah-Reno (LTR) Stage Line, Office of Defense Transportation, Oregon Coachways