W. Grinstead, undergraduate and honorary member of Phi Sigma Pi
Sigma Chi | Alpha Phi Alpha | Sigma Xi | Sigma Alpha Epsilon | Omega Psi Phi | Delta Sigma Theta | Phi Kappa Phi | Phi Mu Alpha Sinfonia | Phi Kappa Psi | Phi Delta Theta | Phi Kappa Theta | Alpha Delta Phi | Phi Beta Sigma | Sigma Corporation | Sigma Alpha Mu | Sigma Phi Epsilon | Sigma | Kappa Sigma | Beta Gamma Sigma | Tau Beta Sigma | Six Sigma | Sigma Alpha Iota | Phi Theta Kappa | Phi Sigma Kappa | Phi Life Cypher | Phi Beta Kappa Society | SK Sigma Olomouc | Sigma SD14 | Sigma Gamma Rho | Phi Sigma Epsilon |