This was reported in the Central PA birdline for 9/15/2005 (which you can
see at
  http://listserv.arizona.edu/archives/birdeast.html
++++ (excerpts)+++
...LANCASTER COUNTY:
A EURASIAN COLLARED-DOVE was seen at Susquehannock State Park on September
8 
(TA).
...FRANKLIN COUNTY:
... (stuff edited out)...
A total of 12 EURASIAN COLLARED-DOVES were seen perched on a TV antenna in

Shady Grove on September 7 (DGe).

++++

Note, Lancaster and Franklin counties both adjoin Maryland, Lancaster NE
of Baltimore, Franklin north of Hagerstown.  Keep your eyes open!

                                  Jim

Jim Felley
Smithsonian Institution