Niles 51 ft wooden Interurban Combine, as part of the Ohio Railway Museum collection. Detailed car body.
This "museum" version has two bases for trolley poles and two trolley boards, in front and rear.
For a complete kit, order also a frame set #87-2601 and a brass fender #87-4601.
I recommend printing in Frosted Ultra Detail, but Frosted Detail gives also an acceptable result