My cousin was a Teke at Rider in the 1960's and his wife was a member of Sigma Iota Chi. She told me that she believed that Sigma was always a local. Twenty years later, their daughter was a ZTA also at Rider.
Rider has a picture of the Sigma house:
http://cdm15457.contentdm.oclc.org/c...457coll3/id/20. It's a good hike from campus.