Final answer:
The constitutionally bound NOHC Greek letter organizations are part of the Divine Nine, which consist of historically African American fraternities and sororities, including Alpha Kappa Alpha, the first such sorority for Black college women.
Step-by-step explanation:
The constitutionally bound NOHC Greek letter organizations referred to in the question are part of the Divine Nine, which are the nine historically African American fraternities and sororities that make up the National Pan-Hellenic Council (NPHC). Among these, Alpha Kappa Alpha Sorority, Inc., founded in 1908 at Howard University, holds the distinction of being the first Black Greek-letter organization established by African American college women. Notable members of Alpha Kappa Alpha include prominent figures like Kamala Harris, Toni Morrison, and Wanda Sykes.