Marcuse “Cusie” Pfeifer (4 November 1936 – 17 July 2020) was an American gallerist. Pfeifer was an important person in recognition of photography as a fine art, founding member and art exhibition director of the Hudson Valley LGBTQ Community Center in Kingston, New York, and a supporter of the Samuel Dorsky Museum of Art. She helped people, including Sally Mann, Peter Hujar, and Timothy Greenfield-Sanders to launch a career as contemporary photographer.
Pfeifer died on 17 July 2020, aged 83.
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