1977: Alpha Xi Delta at Purdue Began as a Co-Op.

1919: Alpha Eta was known as Omega Tau Fraternity

1921: June 28th, Alpha Eta was installed by 27 Purdue Women

2001: Alpha Eta is installed once again by more than 100 Purdue women and their mothers.

Alpha Eta was first located on Marstellar St. Then in 1927, Alpha Eta, was moved to 781 Russell St. and was quickly nicknamed the 'Tree House Gang' due to a tree house located on the property. In 1938 the current Alpha Eta Chapter house was built. The Girls then moved in and furnished their own rooms. Since then two additions have been added and the parking lot was purchased.