I was in Scranton to visit Steamtown 4 years ago and the Delaware Lackawanna had a lot more than one engine in the area. The yard was packed with Alcos in that paint scheme in the morning and they all left on trains shortly after we went into the museum. There must have been 4-5 sets of at least 2 units each.
One of the prototype magazines has been reporting that D-L is building or has built a new engine house in the Scranton area.