Alpha Phi absorbed 3 of Beta Sigma Omicron's chapters at Baldwin-Wallace (became our Delta Upsilon chapter which is still active), Indiana University of Pennsylvania (became our Delta Phi chapter which is dormant), and Louisiana State University (became our Delta Tau chapter which is being recolonized currently and will be reinstalled soon).

Here's what my 1990 Baird's says about Phi Omega Pi

The chapters at Iowa State Teachers College, Newark State Normal, and Montclair Teachers College were placed on the inactive list by order of the Panhellenic Congress (sic) when Phi Omega Pi joined it. In the period following, chapters were taken over by Alpha Omicron Pi, Alpha Gamma Delta, Sigma Kappa, and Kappa Alpha Theta. The group disbanded in 1946. Through an NPC committee, Delta Zeta was asked to consider the alumnae and a few chapters which remained. The society was officially absorbed by Delta Zeta on August 10, 1946.

I'm pretty sure our Auburn Chapter is the old Phi Omega Pi chapter.

From Wikipedia: Delta Sigma was a collegiate sorority operating in New England from 1895 to 1908. Its three chapters were absorbed by Alpha Omicron Pi.

At the end of the spring semester in 1895, six female students at Tufts University drew up plans for Alpha Delta Sigma. In October of the same year, the constitution and bylaws were drafted. Initiations were held on November 14 and December 9 (Start, p. 231). The badge was a "square pin of blue enamel displaying the letters". The official colors were blue and gold (Baird's 1898). This chapter became the Alpha chapter of Delta Sigma.
Alpha Delta Sigma existed as a separate group from Delta Sigma, Alpha chapter. Baird's (1905) maintained a separate entry for ADS, with membership at 33. Delta Sigma, with Alpha, Beta, and Gamma chapters, are listed among the national sororities. Seventy seven women were members of the Alpha chapter (Baird's 1905, p. 314).
Female students at Brown University created Delta Sigma in 1896. Martha Mitchell described the sorority as "formed as a local organization in 1896, and merged in 1901 with another local society, Alpha Delta Sigma at Tufts" (Encyclopedia Brunoniana). Baird's(1905)described this merger as "the outcome of ΑΔΣ (local at Tufts) and ΔΣ at Brown". Thus, Brown's Delta Sigma is now the Beta chapter.
The Maine chapter began as Phi Gamma in 1896. It joined Delta Sigma as the Gamma chapter in 1903. Five years later, Alpha, Beta, and Gamma were absorbed by Alpha Omicron Pi (Fernald, p. 24). Delta Sigma ceased to exist as a separate entity.


The official colors were pale green and white.
The flower was the violet (Phi Delta Theta, 1907).
The badge was "a square of black enamel with concave sides outlined in gold, and displaying the letters 'ΔΣ' in gold. This square is encircled by a jeweled golden circle" (Baird's 1905).

My thread called NPC Recruitment and Chapter Listing in the recruitment forum includes all chapters of former NPC groups, and who absorbed them.

Syracuse University has had chapters of 25 of the 26 current NPC members. For a time their GLO website said they had all 26 at one point or another, but that is not true. Sigma Sigma Sigma has never chartered a chapter at Syracuse.

With DPhiE's colony this spring, Indiana now has 22 of the 26 NPC sororities.

Missing:
Alpha Sigma Tau
Phi Sigma Sigma
Sigma Kappa
Sigma Sigma Sigma

(There were also 22 sororities when I was there in the 90s. Sigma Kappa and Sigma Sigma Sigma both closed down in 1994, along with Alpha Sigma Alpha, which has since returned. Theta Phi Alpha and Delta Phi Epsilon weren't there at the time)

The only NPC groups that never had a chapter at IU are Alpha Sigma Tau and possibly Phi Sigma Sigma. (IU has a Greek walkway with stones listing every fraternity/sorority that has ever had a chapter at IUB. There is a stone for Phi Sigma Sigma with an establishment date of 1969, but I've never seen an IU chapter on a list of Phi Sigma Sigma chapters. Perhaps this was a colony that never fully chartered?)

[strike]There was an absorption of the local Sigma Phi Sigma as a colony at Indiana by Phi Sigma Sigma. See http://www.newspapers.com/newspage/13700309/ . What happened beyond that, I'm not sure[/strike]

edit: I agree, with the person below who indicated that it was IUP. That's really wierd that it was the same year.

That looks like it was at Indiana University of Pennsylvania.

Glad Delta Sigma was mentioned. Delta Sigma is an example of a small, non-NPC sorority that had hopes of going national, but instead joined an established NPC organization. In addition to non-NPC Delta Sigma joining NPC Alpha Omicron Pi, there were other tiny non-NPC nationals that went to NPCs chapters:

1) Pi Delta Kappa to Chi Omega (3 chapters, 1910s)

2) Pi Sigma Gamma to Beta Sigma Omicron (UCLA chapter died, the 3 remaining chapters to Beta Sigma Omicron, 1932-ish)

3) Kappa Sigma Tau's 3 chapters died approx 1930; Lake Forest joined Alpha Xi Delta

4) Phi Delta had two chapters go to Beta Phi Alpha and Alpha Delta Pi, the rest died and SUNY Albany stayed local.

5) Sigma Sigma Delta closed all chapters but one, which went to Phi Omega Pi 1938.

6) Two-year "junior" sororities to become absorbed- Alpha Kappa Psi and Phi Mu Gamma had a couple chapters each join Delta Delta Delta 1910s.

Phi Sigma Sigma at Indiana..
 

OK after my first mistake, I verified that Arbutus is the yearbook for Indiana University. I then google searched
"arbutus" "phi sigma" site:e-yearbook.com
and got about 1000 hits including "Phi Sigma Kappa" and "Phi Sigma Iota"
I then google searched
"arbutus" "phi sigma sigma" site:e-yearbook.com
and got one, and *that* was in aWidener University yearbook (with Arbutus as a street name).

Interestingly, we're also the only NPC to never have had a chapter at Penn State (main campus). We don't follow the trends :p

Even more interesting is that about 1/4 of our chapters are in PA, and I'm about 95% sure we have more PA chapters than any other NPC. And if we don't, we're probably in a close 2nd.

From what I understand, we did try to colonize at IU recently, which is surprising to me (based on housing and alumnae base). We'll see if another attempt is made soon.

Yeah, that is weird considering how many PA chapters you all have. Here's to wishing AST luck should they put in a packet at U. Park! Good luck to everyone!

Number of chapters in Pennsylvania:
1. Alpha Sigma Tau (23 active/2 closed) Never at Penn State
2. Delta Zeta (17 active/1 future recolonization/8 closed)
3 (tie) Phi Sigma Sigma (16 active/8 closed) At Penn State 1946-1970
3 (tie) Zeta Tau Alpha (16 active/4 closed)
5. Sigma Sigma Sigma (15 active/4 closed) At Penn State 1954-1969/1989-1992/1994-2014
6. Delta Phi Epsilon (13 active/9 closed) At Penn State 1960-1966
7 (tie) Alpha Sigma Alpha (11 active/1 future recolonization/8 closed)
7 (tie) Alpha Phi (11 active/2 closed)
9 (tie) Alpha Gamma Delta (10 active/4 closed) At Penn State 1947-2000)
9 (tie) Sigma Kappa (10 active/4 closed)
11. Alpha Delta Pi (9 active/1 active colony/3 closed)
12 (tie) Kappa Alpha Theta (9 active/ 2 closed)
12 (tie) Kappa Kappa Gamma (9 active/2 closed)
14. Alpha Xi Delta (8 active/1 planned colony this semester/10 closed)
15 (tie) Delta Gamma (8 active/2 closed)
15 (tie) Alpha Chi Omega (8 active)
17 (tie) Phi Mu (7 active/8 closed)
17 (tie) Theta Phi Alpha (7 active/7 closed) At Penn State 1929-1969
17 (tie) Chi Omega (7 active/6 closed) At Penn State 1926-2014
17 (tie) Kappa Delta (7 active/4 closed)
21. Alpha Omicron Pi (6 active/1 future colony/4 closed)
22 (tie) Pi Beta Phi (6 active/4 closed)
22 (tie) Delta Delta Delta (6 active/3 closed) At Penn State 1947-2009
22 (tie) Gamma Phi Beta (6 active/2 closed)
25. Sigma Delta Tau (4 active/1 closed)
26. Alpha Epsilon Phi (2 active/3 closed) At Penn State 1937-1978

Pennsylvania has so many colleges and universities.

I'm hoping we do! It'd be great to have a chapter there.

Thanks for the list! And according to your NPC chapter listing thread, Pennsylvania has 51 schools with active NPC sorority chapters. Is this the most? I looked at a few other states - Texas, Alabama, California - and none of them have more than PA.

ETA: New York has 48. That's the closest I've found.