An Evening With Groucho is the title of a 1972 recording at New York City's Carnegie Hall of the last one-man show by American comedian Groucho Marx. Introduced by Dick Cavett, the show was released as a double album by A&M Records. Marx shared family stories and performed songs from Marx Brothers movies. Marvin Hamlisch accompanied Groucho on the piano.
The double album was released in 1975.
There was no context given as to when the album was released but it could have been released in 1975.