This is a portrait of an unknown woman-most likely from Society, as were many of the photographers clients.

British photographers Emily & Lillian Selby began taking photographs together while operating their first American portrait studio at 292 Fifth Avenue in New York City beginning in 1900. Collectively signing their work as The Misses Selby, the sisters, (Emily: b. 1868 | Lillian: b. 1866) according to Jane C. Gover:  …were seeking an artist’s studio in New York when they happened to be offered a photographer’s studio with all its equipment. Relying on Emily’s business experience and Lillian’s degree in science, the sisters established a portrait studio and quickly became well known in Manhattan. (1.)

1. The Misses Selby: in: Ambassadors of Progress, American Women Photographers in Paris, 1900-1901: edited by Bronwyn A.E. Griffith: Musée d’Art Américain Giverny, France In association with the Library of Congress, Washington, D.C.: 2001: p. 170