Robert,
They were made by Rick Franzosa for what was to be some kind of Tristate Rails project from BLW/ZT I believe. I saw them & asked Walter Conklin about them & was lucky to receive them with permission. I don't know the status of that project with everything they got going on there.
When I was making this activity, I thought I was in the Tristate route because I wanted to have the LHR Consolidation leave Maybrook, NY, Drop the cars at Greycourt, NY then take the rest of the consist into Easton, PA in the driving snowstorm. Then make another activity with taking the Erie freight into Croxton Yard. But when I looked and had it 95% done, I seen I was in the LHR 1940's route which is awesome also. I will revisit this one day when I have time to redo it in the Tristate Route because it is perfect for it. The track layout that Doug Relyea did is mindboggling & prototypical. Going up along the Erie's Bergen County Line, I can vouch for that.