Historic photograph help needed

[Mywak]

I am a museum curator trying to find a home for a sorority photograph. Writing on the back of the photo dates it as members of the Delta Nu sorority in June 1912, and the photo shows ten women in the living room of a house. They are holding a Delta Nu banner, but writing on the back does not identify the college or university. Some of the women's names are: Ester [sic] Allen, Helen Gliot, Sigrid Jespersen, Marie Swansen [sic], Gertrude Apelt, Lillian Kubbert, and Bertha Iten [?] I don't know if Delta Nu was a local chapter of a national sorority or a national sorority now disbanded. I tried an internet search, but all I found was that it was a sorority in the movie Legally Blonde! The person who donated the photo to our museum bought it at a yard sale in Michigan. I would like to pass the photo on to a museum or archive at the appropriate institution. Any help you could offer would be appreciated.