MaVynee was the official historian and matriarch of American Beach and was an important character in American Beach: a Saga of Race, Wealth and Memory by Russ Rymer. She holds a degree from the Oberlin Conservatory and sang opera in Europe for many years. She has been featured on CBS, PBS, and NPR, and in such publications as USA Today, the New York Times, and The Smithsonian
, as well as many others. She is a member of over sixty different charitable organizations and a lifetime member of ten.
While she lived in American Beach, MaVynee gave visitors a guided walking tour through the eyes of a woman who grew up on the beach during its heyday. She was an animated and colorful woman with a passion for the history and preservation of American Beach.
MaVynee Oshun Betsch died on September 5, 2005 on American Beach. MaVynee may be best remembered for her tireless work and significant success in preserving this special place. Before she died, her conservation efforts were rewarded when National Park status was given to the giant sand dune Nana
on American Beach 
She was postumously honored as an Unsung Hero of Compassion
by the Dalai Lama on November 12, 2005.
MaVynee is survived by a noteworthy brother and sister. Her sister is Dr. Johnnetta B. Cole, an anthropologist and the only woman to be president of the two all women black colleges in the United States: Spelman College and Bennett College. Her brother, Johnny Betsch is a jazz musician who lives in Paris.
MaVynee Betsch and American Beach have inspired two women to create documentaries on the subject. An American Beach, that focuses on the history of American Beach, with conversations with The Beach Lady. MaVynee is also the subject of The Beach Lady, a feature length documentary.