The late Beatles star was an avid artist in his spare time and Ono has now chosen to show off over 100 of his limited-edition drawings and re-printed song lyrics at the Gimme Some Truth exhibit at a pop-up gallery in SoHo.
She tells the New York Post, "There was a time when it seemed like the whole world was attacking me, and John was there to protect me. Now I protect John's legacy because his art promotes peace... The more art and music like John's, the bigger chance we all have for peace...
"(At first) I thought it would never fly (be popular) because of the elitist attitude in the art world. In music John was revered, but many people in art just thought he was dabbling. They didn't know these paintings were a window into his soul."
A portion of the works will be up for sale, with proceeds benefiting Citymeals-on-Wheels, a meal delivery service for senior citizens.
The show is set to close on Monday.