I have seen a few layouts of Grand Central in New York and Union Station in Chicago, but I have no seen any layouts of the famous/infamous Pennsylvania that helped changed the United States as we know it.
I’m also looking for plans to recreate the building (exterior only) of the station in N scale. Any blueprints?
I found one site, blueprints.com that has a blueprint of the front of penn station as it looked when built. you might try that. they may have more blueprints of the entire structure.