PRINCETON, N.J. - 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 Ms. Morrison and spoke over Zoom, included former President Obama, Michelle Obama and Oprah Winfrey, as well as the Librarian of Congress, Carla Hayden.

The monthslong series of events are paying tribute to Ms. Morrison, who died in 2019 at age 88. The tribute opened with a recording of Ms. Morrison’s voice playing in the auditorium, reciting a passage on Harlem from her 1992 novel “Jazz”:

“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 Black national anthem “Lift Every Voice and Sing.”

The dedication was made by Michael Cadden, a longtime Princeton lecturer who co-taught courses with Ms. Morrison, and formerly served as chair of the Lewis Center of the Arts.

Mr. 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 Ms. Morrison.

“Our new stamp will be seen by millions, and forever remind us of the power of her words and the ideas she brought to the world,” Ms. Mehra said.

Photographer Deborah Feingold, whose portrait of Ms. Morrison taken for Time magazine’s Jan. 19, 1998, cover appears on the stamp, also spoke at the event.

Ms. Morrison’s son, Ford Harrison, and his family were also in attendance Tuesday.

“Anyone who was lucky enough to meet (Morrrison), knows that she was just as captivating in person as she was on the page,” said Ruha Benjamin, a professor of African-American studies who read a letter written by the Obamas. “We hope that this postage stamp would make her smile, that she would love the idea of helping us connect through writing once again,” she said.

“Toni may no longer be with us, but we know that her words will endure — challenging our conscience and calling us to greater empathy,” Ms.Benjamin said.

In 1993, Ms. Morrison became the first Black woman to win the Nobel Prize for Literature.