Conversation so far:
what is Buffalo Springfield?
Buffalo Springfield was a Canadian-American rock band active from 1966 to 1968 whose most prominent members were Stephen Stills, Neil Young, and Richie Furay.
was Buffalo Springfield an album?
Buffalo Springfield is the eponymous debut album by the folk rock band Buffalo Springfield, released in December 1966 on Atco Records.
were the Buffalo Springfield band albums hits?
Buffalo Springfield peaked at #80 on the Billboard Top Pop Albums chart. Buffalo Springfield Again peaked at #44 on the Billboard 200.
what did Stephen Stills do with David Crosby?
After the disintegration of Buffalo Springfield, Steven Stills played on the Super Session album with Al Kooper and joined up with David Crosby.
did Stephen Stills and David Crosby release other albums together besides Super Session?
Stephen Stills and Crosby released the following albums:1969 Crosby, Stills & Nash (CSN)1970 Déjà Vu (CSNY)1977 CSN (CSN)1982 Daylight Again (CSN)1988 American Dream (CSNY)
was david crosby playing for anybody else before he joined stills' band?
David Crosby was a member of the band called Byrds.

Question: did he know Nash before he worked with him?
Self-contained rewrite: did Stephen Stills know Graham Nash before he worked with him?