Wow! Great shot of the Georgetown local in May 1982 taken during the day. (The local was normally nocturnal so photos are rare) This pic shows B&O GP30 6960 with a Chessie caboose in tow passing under the Aqueduct Bridge remains. The really neat thing about the photo is the small red warning light mounted in the coupler on the head end.

http://www.railpictures.net/viewphoto.php?id=318379

A really nice article about the Georgetown Junction, focusing on the history of  the fatal February 1996 wreck involving Amtrak & MARC trains. Some really nice photos including some showing the remaining tracks on the Branch!

http://fullertography.blogspot.com/2010/03/return-to-georgetown-junction-march-19.html

One of the other GB nuts, Kelly, has been doing some track planning of his own after having to clear out his old Georgetown Branch layout. (RIP) The plans for the new one are under development and look great as of their first iteration! You can see all his progress on his blog, here:

http://georgetownbranch.blogspot.com/2010/03/georgetown-branch-2010.html