Conversation so far:
what did Simon & Garfunkel do in the studio?
Simon & Garfunkel's fourth studio album, Bookends, was recorded in fits and starts from late 1966 to early 1968.
did Simon & Garfunkel record any other albums in the studio from late 1966 to early 1968.?
did something happen with Simon & Garfunkel in 1967?
Although the album had long been planned, work did not begin in earnest until late 1967.
did the Simon & Garfunkel album that had long been planned sell well?
The album became the duo's bestselling to date, helped by the attention for the Graduate soundtrack ten weeks earlier, creating an initial combined sales figure of over five million units.
what record label was used for Simon & Garfunkel's album Bookends?
Bookends was released by Columbia Records in April 1968.
did something happen when Bookends was released by Columbia Records in April 1968?
The assassination of civil rights movement activist Martin Luther King Jr., which spurred nationwide outrage and riots.
did Simon & Garfunkel record another song in 1968?

Question: did anything else happen in 1968?
Self-contained rewrite: did anything else happen with Simon & Garfunkel in 1968 besides Bookends' release by Columbia Records in April 1968?