(1965) Unsold pilot: Starred in a pilot called "A Man Named McGee". The plot concerned a man who inherits a tropical island.
(1966) Unsold pilot: Starred in a sitcom pilot called "Yankee Stay Here" in which he played an American officer during WW2 who was ordered to lead a motley crew of Italian partisans behind German lines. The teleplay was written by Arne Sultan.
(1968) Unsold pilot: Co-starred in a sitcom pilot for ABC called "The Princess and Me". The pilot starred Barbara Hershey as a European princess traveling the U.S. incognito and Slate played a U.S. State Department official who, unhappily, is assigned to accompany her. The teleplay was written by Bernard Slade and directed by E.W. Swackhamer.
Songwriter: Wrote the lyrics for "Every Time I Itch (I Wind Up Scratchin' You)". Recorded by Glen Campbell on Capitol Records. Music by Glen Campbell.
(1967) Songwriter: Wrote lyrics for "Just Beyond the Moon". Recorded by Tex Ritter on Capitol Records. Music by Tex Ritter.
Stage: Appeared in "Look Homeward, Angel" on Broadway.
Stage: Appeared (as "Starbuck") in a production of "The Rainmaker". Professional English Language Theater, Lima, Peru.