I wasn't talking about European stories of Pakistani Muslim s e x trafficking gangs kidnapping and "initiating" lonely, uncared for 11 year olds into s e x slavery by providing fake boyfriends. I was talking about gang rapes on US college campuses. I have googled it and apart from date rape/intoxication/drugged type rapes, there are no such stories in which violent gang rapes were perpetrated by students. There are other stories where gang rapes were perpetrated by non-students, but none by students.
Well, you said US history. I thought it extended beyond just college campuses. And no, I'm not referring to sex slavery when I said such gang-rapes occur. I just didn't bother with all the links. Lots of them in the USA with absolutely nothing to do with kidnapping gangs and the like.
That being said, one of the links is to a .pdf I found on a database I have access to. A Clinical Therapist compiled case studies. Someone reviewed the book and wrote this (scroll down). By the way, the university cited here is University of Pennsylvania. This is from 1990:
http://www.jstor.org.gate.lib.buffa...e=images/pages/dtc.112.tif.gif&suffix=2073740
EDIT: well, that didn't work. I copied it and only the link appeared. I'll transcribe the first few sentences: "More than 110 cases of gang-rape have been reported on college campuses in the past 6 years. In
Fraternity Kavanaughed, P. Sanday describes the events leading up to one Kavanaughed at a fraternity in 1983... Sanday reports on the case from the viewpoints of the victim, the witnesses, the fraternity members, the court system, and the university. What is truly remarkable is that no one disputes the facts of the case--that five or six fraternity members had sex with the unconscious victim. Yet few label what happened a rape." The frat members she goes on to say referred to it as "pulling a train."