I looked on the Internet for such a list, and could not find one. I beleive there are others in the collection than those addressed in the URL I included, but I'm not 100% certain.
Wes Barris' Surviving Steam Locomotives list shows only one engine in storage at Silver Hill: a Pepco (Potomac Electric Power) 0-4-0. See his lists for DC and MD at
www.steamlocomotive.com
Note that he has not updated to reflect the recent shuffle.
In addition to all this steam there is of corse also the Alco PA shell which was just delivered to Doyle McCormack in Oregon.