Civil Liberties

Eisenhower had four appointments. (Earl Warren, who Nixon got to replace with Burger in 1969, was also an Eisenhower appointee.) Truman also had four appointments but they were all long gone before 1969. In fact three were gone during Eisenhower's terms.

You can never predict how much or little influence a President is going to have on the Court. Ford thought he was moving the Court to the right by replacing Douglas, but put one of the more reliable liberal votes on the Court. Same thing with Bush the First and Souter.