[3] Phi Sigma Rho was founded on September 24, 1984, at Purdue University by Rashmi Khanna and Abby McDonald.

[4] The Alpha chapter at Purdue University was founded with ten charter members: Gail Bonney, Anita Chatterjea, Ann Cullinan, Pam Kabbes, Rashmi Khanna, Abby McDonald, Christine Mooney, Tina Kershner, Michelle Self, and Kathy Vargo.

The sorority made the decision to include non-binary students in all chapters in the summer of 2021.

"[4] Phi Sigma Rho's national philanthropy is the Leukemia & Lymphoma Society.

[6] The Phi Sigma Rho Foundation was established as a separate nonprofit organization in 2005.