In 1968 Eric Goldman wrote "The Tragedy of" this president: "A Historian's Personal Memoir"
... (
1956), and The Tragedy of Lyndon Johnson: a Historian's Personal Memoir (
1968);... [DOC] [TLE] Finding Aid for the Eric Frederick Goldman Papers, 1955-1965 [PAR] Finding Aid for the Eric Frederick Goldman Papers, 1955-1965 ... University, 
special consultant to President Johnson (1963-66) and wrote many books.