University of Rhode Island-Alpha Phi was installed in 1999 (I was one of them!)

Bentley College (MA) only has informal in the fall

Great job with this, I am just amazed by all your work!

AEPhi at Duke
 

So you can update your stats...the Alpha Epsilon (Duke U.) chapter of AEPhi went dormant in 2004.

Alpha Gamma Delta at Michigan State University closed in 2002. (This was my chapter of initiation. :( )

This list is awesome! I'm so impressed - many things I've been curious about (but not able to look up as I don't have access to Baird's) have been answered.

ETA: Bowling Green State University (Ohio) recruitment dates are Sept 6-10. (I'm chapter advisor there - I'll keep you posted on results in the fall...)

Phi Sigma Sigma is not on campus at the University of Delaware as of this year.

Slight Correction: At UT Tyler, we all came on at the same time.

University of San Diego

Formal Recruitment: January 23-27
1/23: Open House
1/24: Philanthropy
1/25: Sisterhood
1/26: Preference
1/27: Bid Day

ZTA was just installed this weekend at Northwestern University.

Iowa State University

August 11-16

The 11th is move in day, the first round is the 12th.
Bid Day is the 16th.

Just a note: Tri-Sigma at Indiana University Bloomington closed in 1994. (I was there at the time - there was also a big feature in the 1993-1994 yearbook about the chapter closing) I think ASA came to campus in 1989 or 1990. (their first formal rush was 1990-91 per an unofficial IU guidebook I have)

Also, here are the dates of IU's formal rush, per the PHA website:
October 16-17 19 Party
January 3 First Invite
January 4 Second Invite
January 5 Preference Round
January 6 Bid Day

The IU Panhellenic website is at http://www.indiana.edu/~pha

Some more Duke historical info
 

Kappa Delta was active at Duke between 1912-1967, and again from 1976-1990

Zeta Tau Alpha was active at Duke between 1915-1995, and again from 2005-present

Alpha Phi: This one's a bit weird. The web site for Duke's Office of Fraternity and Sorority Life says that this group's active dates are 1935-2003 and 2003-present. I know for a fact that when I was on campus in the mid-80s Alpha Phi was not there, but the 2003-present date seems correct. Maybe someone else knows if Alpha Phi existed at Duke way back when?

I'm going to assume the website is incorrect since I doubt they closed and re-opened in the same year.

My 1991 Baird's gives Alpha Phi's dates at Duke from 1935 to 1970.

Mystery solved!
 

I figured that someone with access to a Baird's Manual would be able to clear this up -- thanks!!

Have Delta Gamma info for Duke as well
 

Delta Gamma: Active 1939-1974, 1986-present