to restoring the Thomas Viaduct:

Friends of Patapsco Valley + Heritage Greenway (designate "Thomas Viaduct")

Friends of Patapsco Valley +
Heritage Greenway
P. O. Box 96
Ellicott City, MD 21204
att'n Betsy McMillion, exec. dir.
Friends of Patapsco Valley +
Heritage Greenway
CSX Transportation
George's Creek Railway
American Society of Civil Engineers
Greater Elkridge Community Association
Whiting-Turner Contracting Company
B&O Railroad Museum