Other information: Martin owned the original mounted portrait, which was passed down the family line. The words "Campbell Studio / Waldorf Astoria" are imprinted in the lower right corner. It's viewable below under "file history" (middle picture) when enlarged to maximum size. This would date the piece between 1911 & 1913. The studio was located inside the former Waldorf-Astoria hotel, for only those three years. Sources: 1a) Trow Business Directory of the Boroughs of Manhattan and the Bronx, 1913 p. 785 (address listing). 1b) Studio Light, Eastman Kodak Company, March 1917 p. 12. Excerpt: "In 1911, the Campbell Studio opened spacious quarters in the Waldorf Astoria, but after three years found that they needed more room to carry on an ever-increasing business, so moved to their present location at 538 Fifth Avenue." Internet Archive. 1c) American Art Annual, edited by Florence Nightingale Levy, 1914 p. 514. The company's address is now 538 Fifth Avenue. HathiTrust.

Connection. Who's Who in America 1912-1913, edited by Albert Nelson Marquis, 1912 p. 633. This is a primary source that connects Eickemeyer to the historic hotel. His work address is given as "Campbell Studio, Waldorf-Astoria, New York, N.Y." Who's Who in New York City and State, edited by William Frederick Mohr, 1914 pp. 229–30. Backup source. Who's Who in America 1920-1921, p. 862. His second stint with Campbell Studio was from 1911–15.

Dit werk was nooit gepubliceerd vóór 1 januari 2003, en bevindt zich nu in de publieke domein in de Verenigde Staten omdat het aan een van de volgende voorwaarden voldoet: de auteur is overleden voor 1954; de sterfdatum van de auteur is niet bekend en het werk is gemaakt vóór 1904; het is een anoniem werk, een pseudoniem werk of een werk gemaakt voor verhuur, en het is gemaakt vóór 1904. "De bovenstaande bepalingen zijn opgenomen in 17 U.S.C. [$ 1 § 303]. Meer informatie