Final update for 2013 are three volumes of books labeled “Signals” – for when you need to escape the inlaws and family to browse the internet.   There may be some duplicate photos – we’ve seen some of the Cincinnati Union Terminal photos before under E.P. Interlockings.  But they’re still worth another look as this is the way US&S organized them.  There’s a lot of other gems too, like these:

Under the wires on the Reading Company, Philadelphia. Diamond Street tower in the background, looking north.

Automatic Signals on the P.R.R. near Seward, PA. (7-11-1933)

Enjoy and have a Merry Christmas and a Happy New Year!