R. Borden Carew, undated [circa 1900-1910].

Professor Lowe observing the battle of Fair Oaks, Va., from his balloon

Proctor Smith, undated [circa 1900-1910].

Proctor Smith, undated [circa 1900-1910].

Proctor Smith, undated [circa 1900-1910].

Prince Paul Troubetzkoy.

Prince Paul Troubetzkoy, sculptor--of Paris & Moskow.

Polo Squadron A, Van Cortlandt Park, undated [circa 1900-1910].

Plant family, New London, undated [circa 1900-1910].

Plant family, New London, undated [circa 1900-1910].

Plant family, New London, undated [circa 1900-1910].

Peter Vredenburgh III, undated [circa 1900-1910].

Paul S. Harvey, undated [circa 1900-1910].

Park of captured guns at Rocketts, Richmond, Va.

Palm Beach Hotel, people on walkway with palm trees, undated [circa 1900-1910].

Palm Beach Hotel, partially enclosed sitting area, undated [circa 1900-1910].

Palm Beach Hotel, guests practicing golf, undated [circa 1900-1910].

P.W.K. Mittencoix, undated [circa 1900-1910].

P.W.K. Mittencoix, undated [circa 1900-1910].

P.W.K. Mittencoix, undated [circa 1900-1910].

P.M. Coddington, undated [circa 1900-1910].

P.M. Coddington, undated [circa 1900-1910].

P.E. Donner, undated [circa 1900-1910].

Otis, undated [circa 1900-1910].