The trucks were from Eastern Car Works, P.O. Box L624, Langhorne PA 19047
#9010, Pennsylvania 2C-P1 with a 7' wheelbase.
One reason I ask is that I don't think they are still in business.
The wheels are 36" metal from Inter-mountain.
I have a bag from Roundhouse marked "HO Passenger trucks, 02936, Wood beam" but have no idea where these got to. I remember buying them however. Again I don't think these are still made.