Misc: what dodgers and cubs first-baseman dropped baseball to take up acting?

Questions

On This Day In January 1966 - Duke Ellington?

On This Day In January 1968 - Gibson ______ its "Flying V" electric guitar.?

On This Day In January 1968 - Dick Clark premiered his TV series "Happening '68." The show ran through ______ of 1969.?

On This Day In January 1975 - About a thousand Led ______ fans riot while waiting for tickets to go on sale at Boston Garden. About $30,000 was done in damage and the show was cancelled by Boston Mayor Kevin White.?

On This Day In January 1977 - ______ terminated its contract with the Sex Pistols only 3 months after signing it. No reason was given.?