"Rosetta" and "Legacy" marked Christopher Reeve's final film appearance before his death. Music from the original Superman (1978) film can be heard during his scenes.
This was Christopher Reeve's final acting role before his death on October 10, 2004 at the age of 52.
Hiram Kent was born on January 24, 1924 and died on December 22, 1980.
The outside shots of the building where Lionel, and later Clark, meet with Dr. Swann is the Dakota Building in New York City. Infamous building where John Lennon was killed in December 1980.
The exchange between Dr. Swan and Lionel indicates they don't know one another. We find out later on that they did know each other once when they both were members of Veritas.