It was founded in June 1928 by a group of women from Philadelphia and its surroundings.

[1] In January 1930, the members had purchased the lot at 1616 Latimer Street, and oversaw the construction of an Art Deco building.

[1] The members of the Cosmopolitan Club of Philadelphia are all women, and they represent a wide array of ages, races, cultures, interests, skills, professions and affiliations.

Thirty-eight of the club's past and present members have been named Distinguished Daughters of Pennsylvania.

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