We all have seen pics of the nice work Doyle is doing his PA.

What is the status of the other PA that came back from Mexico? What are the plans for it's future?

The short answer is, nothing. Ex-D&H PA #16 is still in storage in Albany(?), OR, and no work has been done except setting it on the trucks, which was the extent of Doyle's involvement in its restoration. The rest is up to the Smithsonian. There was a rumor probably a year ago now that it was to be sent upon completion to be displayed at KC Union Station.