REMOVE

1. Maryland
2. Gray, Frank Arnold

WHAT

1. Atlas Map (1)
2. Railroad (1)
3. State Atlas (1)

WHERE

1. Delaware (1)
2. District of Columbia (1)
3. Washington (D.C.) (1)

WHO

1. Gray, Ormando Willis (1)
2. Lloyd, H.H. (1)
3. Martenet, Simon J. (1)
4. Stedman, Brown & Lyon (1)

WHEN

1. 1873 (1)