Chapter House

Welcome to the Alumni Website of our Presently Closed Chapter in SLO

This site is dedicated to keeping the 1,600 Alumni of Delta Sigma Phi from San Luis Obispo connected and informed about Alumni and University news, issues, and events. Delta Sigs were the first national social fraternity men in SLO-Town. Our national fraternity was founded in 1899 and our SLO Chapter was established in 1950. Our chapter was closed on April 1, 2018, for a period of 18-months. Our bond and brotherhood last a lifetime. We look forward in the future to again providing mentoring, leadership training, character-building programs, and scholarships and other academic-achievement incentives to young men when our SLO chapter again has the privilege of University recognition.

Special News Items

Our Alumni Reunion scheduled for April 2020 is cancelled due to the national health emergency. The ACB meeting is being changed to a remote, virtual, teleconference that alumni will be able to electronically attend. Monitor this page for details on how to call into the Saturday, April 25, 2020, 10 a.m., virtual ACB meeting.

Please access our on-line alumni directory on this AA web site by selecting the menu item "FIND ALUMNI". Please update your contact info so AA can keep you in-the-loop with newsletters, e-new releases, reunion info, chapter return progress, etc.

Please join AA, and give a donation if possible, to help us pay for storing our paddles and other fraternal memorabilia, and for providing newsletters, web site, and growing a modest "chapter-return" fund. Dues are $20 a year, and it takes 125 alumni at $20 just to pay for commercial storage in SLO.

How To Give By Check:

Please make your check payable to DSP EP Alumni Assn. and mail it to Ray Calande (“Mumbles”, W’74) at 1384 Rue Avati, San Jose, CA 95131-2547

How To Give Electronically:

Go to, follow instructions, and give to: We will assign your giving first to "Dues" and then to "Where most needed".

With brotherly thanks, Chris Yabut Patterson, W'73, Alumni Assn. officer, newsletter editor, web site manager. / 530-941-3986.

Poly P Scholarship

Poly P Scholarship SLO Delta Sig alumni established a philanthropic scholarship program in 2012, the “Poly P Scholarship”. This program provides our alumni with a collective means of giving-back to our alma mater and its student body while honoring our older DSP Brothers who designed and built the present hillside “P” in 1957. To date DSP alumni and their wives have given $16,000 directly to non-fraternal and non-sorority students based upon merit and need. Non-Greek, first year students equally share in educational awards.

The 2019 competition begins Friday, November 8th (subsequent to Greek-recruitment) and ends at midnight on Friday, December 6th, the last day of Fall Quarter classes (to avoid interference with the final exam week).

Those interested in this program can access the on-line application and related scholarship information at, or use the following links.

The photo of the "P" is from DSP archives and shows a 1981 DSP undergrad work-day on the hillside icon.

- Scholarship Information

- Scholarship Application

- Poly P Patrons and Judges

Navigating this Site

Web Site - Chairman: Chris “Yabut” Patterson, W’73,


  • REUNION: DSP will celebrate its reunion from Thursday to Sunday, April 23-26, 2019, in SLO.

  • PHOTOS: Plans are underway to expand this site’s “Photo Gallery” to include the photos of recent alumni reunions.

  • OUR GOALS: We value our alma mater and host University. When again given the privilege of having a campus-recognized undergraduate chapter, our alumni and Fraternity will vigorously promote the many shared goals of our Fraternity and University. These include academic achievement, social development, living-to-values, campus involvement, community service, philanthropy, respect and tolerance for others, and the health and safety of our members, their guests, and all in the University community.