November 7 has always been a special date in Delta Sigma Pi history. On November 7, 1907, the Fraternity was founded at New York University by Alexander Frank Makay, Alfred Moysello, Henry Albert Tienken, and Harold Valentine Jacobs. On November 7, 1975 then-Grand President Bill Tatum convened a conference call where the Board of Directors unanimously voted to open membership of Delta Sigma Pi to women. On November 7-8, 2021, the Delta Sigma Pi Leadership Foundation hosted the first Founders’ Day Challenge, which is an annual campaign to raise money for Chapter Leadership Funds (helps chapters achieve educational and professional development growth and success) and the Deltasig Fund (greatest needs).

November 7, 2025, we celebrate 50 years since women have been initiated into the Fraternity as well as 118 years since the Fraternity’s founding and another Founders’ Day Challenge campaign. Celebrate the 50^th anniversary and these other milestones by doing the following:

Host and Attend Events:

• To honor the 50-year anniversary and Founders' Day, host events on or around November 7. Organize a professional, networking, or service event in your community.
  • Chapter event resources
  • Alumni event resources

• The Cincinnati Alumni Chapter is hosting a Central Office Open House on November 7. Spend the afternoon visiting the Central Office learning about the history of our Fraternity and networking with brothers. The Central Office will be open 3:00 p.m.-7:00 p.m. on Friday, November 7th and 6:00 p.m.-8:00 p.m. on Saturday, November 8th
  

• Celebrate your brotherhood by attending a LEAD event! Register here.

Give Back:

• Save the date for the 2025 Founders’ Day Challenge (November 7-8). Celebrate by making a gift for the future of Delta Sigma Pi through Chapter Leadership Funds or the Deltasig Fund.

Make a gift in honor of 50 years of woman to these funds:

• Kathy Jahnke Volunteer Leadership Educational Fund – Developed by PGP Kathy Jahnke (first woman elected Grand President), this fund supports volunteer leadership events, such as the National Volunteer Leadership Retreat, and curriculum development for volunteer training materials.

• Claire Sammon Roberts Women in Leadership – Developed by Claire Roberts, San Francisco State, (first woman to receive Lifetime Achievement Honoree).). This scholarship is available to any undergraduate member of Delta Sigma Pi who identifies as female and has attended a national Fraternity event within the current fiscal year.

• Find another fund to support.

As you celebrate these special occasions, make sure you're sharing your photos/videos with us! Tag @deltasigmapi on social media or email magazine@dsp.org.

To honor this monumental anniversary, Delta Sigma Pi is providing informational and historical profiles about some of the dedicated Deltasigs of our organization— all throughout the year. Stay up to date with new updates every week!   Check back next week to hear about more amazing women in Delta Sigma Pi as we celebrate 50 years of women being initiated into Delta Sigma Pi.