This is the carte de visite photograph that caught my eye.

Drummer Boy Steven Badamo stands next to the monument to "Our Drummer Boy" Clarence MacKenzie. Steven is 11 years old and, remarkably, just got a drum two weeks ago. Clarence was 12 when he was killed in Maryland.

Rev. James Gloucester, a leader of Brooklyn's African American Community.

The burials at Green-Wood of the 103 bodies that could not be identified or remained unclaimed.

That's Mike Pesca, host of Slate's daily podcast, "The Gist," and contributor to NPR, at left; Slate's executive editor Josh Levin at center; and Green-Wood Cemetery's historian (that's me!) at right.