PRINCETON, N.J. (AP) – Nobel laureate Toni Morrison is now forever immortalized on a stamp honoring the prolific writer, editor, scholar and mentor that was unveiled Tuesday morning in a tribute at Princeton University, where she taught for almost two decades.

Guest speakers, some who had close personal relationships with Morrison, included former President Barack Obama, Michelle Obama, Oprah Winfrey and the Librarian of Congress, Carla Hayden.

The monthslong series of events opened with a recording of Morrison’s voice playing in the auditorium, reciting a passage from her 1992 novel "Jazz” on Harlem: "Nobody says it’s pretty here; nobody says it’s easy either. What it is is decisive, and if you pay attention to the street plans, all laid out, the City can’t hurt you."

Later, an all-Black acapella group sang the popular hymn "Lift Every Voice and Sing,” which is known as the Black national anthem.

Princeton lecturer who co-taught courses with Morrison, and formerly served as chair of the Lewis Center of the Arts.

Cadden introduced Pritha Mehra, the chief information officer and executive vice president of the United States Postal Service, who said that the postal service is proud to commemorate Morrison, the first Black woman to win the Nobel Prize for Literature in 1993.