1966 was the 300th Anniversary of Newark. It appears that Military Park was relandscaped. See below picture. See History of The Park. To contribute to the celebration, J. Wiss & Sons paid to have a rose developed and planted in the Park at the base of the Kennedy statue. A bust of John F. Kennedy by Jacques Lipchitz erected in 1965. See picture on Monuments Page, which includes the current base plantings. This is located at the far west of the park in the acute corner. In the far distance in the below photo.
Military Park in 1966 (based on the movie being shown at the Loew's). [Picture from Newark Public Library.]