He left the Guggenheim in 1969 .
While at the Guggenheim , Arnason published his famous survey of modern art in 1968 , A History of Modern Art , much of it drawn from his contacts and experiences with the Walker Museum .
Arnason left the Guggenheim in 1969 .
While at the Guggenheim , Arnason published his famous survey of modern art in 1968 , A History of Modern Art , much of it drawn from his contacts and experiences with the Walker Museum .