Here is a Bachmann Purina promotional HO set. The smaller unmarked box contains trees, and the larger one contains pieces for a tunnel. The Gandy Dancer is not part of the set but it fit in the box, so I put it in there.
Here are some additional Bachmann cars. The car carrier is especially nice. It was not in a see-through box so I took it out for the photo.
None of these were ever used. I know they are not worth a lot of money. Maybe some day I'll have a place to set them up.