REMOVE

1. Covers
2. Washington (D.C.)

WHAT

1. Atlas Map (1)
2. City Atlas (1)
3. Data Visualization (1)
4. Historical (1)

WHERE

1. District of Columbia (2)
2. United States (2)
3. Maryland (1)

WHO

1. (Sixty-One Students of th … (1)
2. Arbuckle Bros. (1)
3. Colton, George Woolworth, … (1)
4. G. Woolworth Colton (1)
5. Gray, Ormando Willis (1)

WHEN

1. 1861 (1)
2. 1873 (1)
3. 1889 (1)
4. 1963 (1)
5. 2021 (1)