At the University of Wisconsin, I'm pretty sure that at various points we had Phi Mu, DZ, KD, Sigma Kappa, Alpha Xi Delta, Alpha Omicron Pi, Alpha Gamma Delta, ADPi, and possibly Theta Phi Alpha. Most of those have been gone since the 60s or so. AGD and AXiD were the last to go (both closed in the 80s, I think). I don't know why most of these closed down, but I think the majority of them were for numbers.
With the exception of Sigma Delta Tau, all the sororities currently at the UW have been continuously open since the 1920s or earlier. Most of them have been open since before 1900.
I'd have to do some more research on the fraternities, but I'm pretty sure we had Phi Gamma Delta up until the early 90s, when they were closed for hazing.
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