ETS placed an order for 6 Mack C-37-DT model buses that were delivered in 1951. These and the 3 Mack trolleys were the only Mack buses ever ordered by ETS. They were retired in the early 60's. 3 were in Mt. Lehman B.C. up until June 1997.

Thumbnail	Bus #	Date	Description
	95	June 1997	ex ETS #95 seen after retirement in Mt. Lehman.
	97?	June 1997	Possibly ex ETS #97 seen after retirement in Mt. Lehman.