 Founded as an organization for professionals, Sigma Pi Phi never established college chapters, and eliminated undergraduate membership during its infant stages.However, Sigma Pi Phi has historically had a congenial relationship with college Black Greek-letter organizations, as many members of Sigma Pi Phi are members of both.Sigma Pi Phi founder Henry McKee Minton and Dr. Martin Luther King, Jr. are both members of Alpha Phi Alpha, while Arthur Ashe is a member of Kappa Alpha Psi.