1 “... is correspondence with such notable figures as Bertrand Russell, Robert Seymour Bridges, Horace Kallen, and Logan...”

2 “... Seymour Bridges, Curt John Ducasse, John Erskine, Horace Meyer Kaller, Lewis Mumford, George Herbert...”

3 “... to such correspondents as Van Meter Ames, Curt John Ducasse, Max Forrester Eastman, Max Fisch, Sidney Hook, Horace Meyer...”

4 “..., Curt John Ducasse, Sydney Hook, Horace Meyer Kallen, Walter Lippmann, Ralph Barton Perry, William Lyon...”