[Rain Man]

Phi Eta
- Primary cause of decease: World War I
- Founded 1904 at University of Pennsylvania
- Had 5 chapters

Phi Kappa
- Primary cause of decease: Well, believe it or not it is still in existence; it is now known today as Phi Kappa Theta, a full-fledged NIC org. Phi Kappa and Phi Kappa Phi merged 4/29/59 and became PKT. Nonetheless, PKT's history is rooted in Phi Kappa's history. For more information, do a google search on Phi Kappa Theta and read away.

Phi Kappa Alpha
- Primary cause of decease: Weak organization
- Founded 1870 at Brown University.
- Was originally started as an outgrowth of Wayland Literary Society. Changed its name to Sigma Phi in 1973 and then to Phi Kappa Alpha in 1874.
- Had 2 chapters, one died out, the other joined Beta Theta Pi in 1880.

Phi Kappa Phi
- Was a local org
- Founded 1849 at Baldwin Institute
- Merged with Alpha Tau Omega 4/18/41

Phi Kappa Pi
- Was a local org
- Founded 9/21/1885 at Monmouth College
- Original name was Theta Sigma Phi until 1902
- Merged with Alpha Tau Omega 5/3/47

Phi Mu Omicron
- Primary cause of decease: Civil War
- Founded 1858 at the University of South Carolina as an outgrowth of the defunct Kappa Alpha Fraternity
- Had 18 chapters, some of them arose from former Kappa Alpha circles (chapters)

Phi Phi Phi
- Primary cause of decease: Weak organization
- Founded 11/22/1894 at Austin College
- Had 5 chapters
- 1 chapter joined Phi Kappa Psi in 1904, the rest died out.

Phi Pi Phi
- Primary cause of decease: Merger with Alpha Sigma Phi
- Founded 11/15/15 at Northwestern University
- Joined NIC in 1924
- Had 20 chapters
- 5 remaining chapters merged with Alpha Sigma Phi in 1939

Phi Sigma
- Primary cause of decease: Weak organization
- Founded at Lombard University by some students who graduated in the class of 1857
- Had 7 chapters, all but one died out, the Alpha chapter joined Phi Delta Theta in 1879

Phi Sigma Delta
- Primary cause of decease: Merger with Zeta Beta Tau
- Founded 11/10/09 at Columbia University
- Had 71 chapters, 16 of which were acquired from the Phi Alpha merger.
- Merged with Zeta Beta Tau in 1969

Phi Sigma Epsilon
- Primary cause of decease: Merger with Phi Sigma Kappa
- Founded 2/20/10 at Kansas State Teachers College
- Had about 60 chapters
- Joined NIC as a junior member org in 1953 and became a senior member in 1965.

Pi Epsilon Phi
- Was a local org
- Founded 1854 at what is now Evansville College
- Merged with Sigma Alpha Epsilon 12/14/57

Pi Rho Phi
- Primary cause of decease: AFAIK, it isn't dead, b/c every time it dies, it comes back in a different form. Truly a Frankenstein GLO
- Founded at Westminster College in 1854
- Had 6 chapters, all but one died out
- The last surviving chapter (Alpha) joined Delta Tau Delta in 1868, lost its charter in 1872 when the entire chapter was ousted from the school, and was revived in 1874 as a sub-rosa (renegade) org until the college finally recognized it as an official org in 1920.
- Helped form Theta Upsilon Omega (see listing) with 9 other orgs in 1924.
- A group of women who found the old traditions, badge and rituals of this extinct org revived it again, this time as a sorority.

Psi Alpha Kappa
- Primary cause of decease: Weak organization
- Founding date and location unknown
- Had 3 chapters, at Lehigh, Lafayette, & MIT
- 1 chapter died out
- 1 chapter joined Alpha Tau Omega
- 1 chapter joined Alpha Chi Rho

Psi Theta Psi
- Primary cause of decease: Weak organization
- Founded at Washington & Lee University c. 1885
- Had 4-6 chapters
- 1 chapter joined Delta Tau Delta, the rest died out.