Skating scene in Central Park, winter 1866.

Rustic Bridge over the Ravine, east of the pool, winter 1866.

Rustic Bridge over the Ravine, east of the pool, winter 1866.

Rustic Bridge over the Ravine, east of the pool, winter 1866.

Rustic stone arch, south of Harlem Lake, winter 1866.

The Eagles, bronze group, winter 1866.

Skating scene in Central Park, winter 1866.

Skating scene in Central Park, winter 1866.

Skating scene in Central Park, winter 1866.

Ascent of Prof. Low's baloon from the corner of 6th Ave. and 59th St.

The music stand.

Tam O'Shanter and Souter Johnnie, near the Casino.

The Marble Terrace.

Tam O'Shanter and Souter Johnnie, near the Casino.

Tam O'Shanter and Souter Johnnie, near the Casino.

The Marble Arch.

The Marble Bridge at the entrance to the Mall.

Cabinet Bridge across the Lake, to the Mall.

Cabinet Bridge across the Lake, to the Mall.

Instantaneous view of the Lake from the Terrace.

Instantaneous view of the Lake from the Terrace.

Instantaneous view of the Lake from the Terrace.

Swans on the Lake.

Observatory and Tunnel.

Central staircase of the Terrace.

The south stairs of the Terrace.

The Bow Bridge.

Music day in the park.

Music day in the park.

Music day in the park.