The Phi Delta Psi Fraternity was founded in the Winter of 1962 by founding fathers Dawn McKee, Geoffrey Miles and William Miles. It was chartered at UPJ on January 22 1963.
On May 15, 1971, Twenty Four (24) brothers of Phi Delta Psi where fully initiated into the Bond of Delta Chi Brotherhood at Penn State University. Each Brother was then assigned a 'Gamma" Number in alphabetical order of initiation until all 24 letter of the Greek Alphabet where used making everyone that has a Gamma Number ending in the number one (1) a Founding Fathers.
On December 6, 1971, the brothers of Phi Delta Psi formed an official Delta Chi Colony upon unanimous approval of the InterFraternity Council to become the first National Fraternity on the campus.
On October 13, 1972 Delta Chi was chartered at the North Fork Country Club.
Delta Chi's 40th Homecoming event was held from Friday September 28th 2012 through Sunday September 30th 2012.
Friday night included a reunion dinner and open bar at the Ambrosia Nectar Lounge, beginning at 7:00pm. The dinner started with a cocktail period, a long time Friday tradition at Delta Chi in which members of the UPJ administration, including President Spectar mingled with the Alumni. A group of speakers from the various decades, including Senators John Rafferty and John Wozniak highlighted the significant events of their era.
On Saturday Alumnus and their wives attended the annual Delta Chi pig roast starting at 1:00pm plus activities throughout. That evening the undergraduate house hosted a live band that played will into the night.
On Sunday there was a brunch hosted at the Ambrosia Nectar Lounge that started at 11:00am.