Series consists of correspondence largely received by Morley Callaghan, but including some copies of letters sent by him as well. The correspondents include his agents, editors and publishers, as well as friends, other writers, scholars, readers, radio listeners, and others.
Among the correspondents in the undated correspondence are: Scott Landers, Edward McSorley, Nathan Asch, Mary Meigs. Among the correspondents in the 1920s file are Graham Spry and Raymond Knister.
Among the correspondents in the 1930s files are: Alfred Kreymborg, George Stevens, Malcolm Ross, Edward O'Brien, Josephine Herbst, Frederick Philip Grove, Laura Salverson, Scott Young, E.K. Brown (fragment), Leo Kennedy and Paraskeva Clark.
Among the correspondents in the 1940s file is Nellie McClung. Among the correspondents in the 1950s files are: Malcolm Ross, Alex Edmison, Josephine Herbst, Dink Carroll and Jack Kent Cooke.
Among the correspondents in the 1960s files are: Thomas Chastain, Edmund Wilson, Paul Martin, Zena Cherry, Josephine Herbst, Robert Weaver, Hugh MacLennan, Carlos Baker, Merrill Denison, Al Purdy, Nathan Phillips, Norman Levine, Malcolm Ross, John Metcalf, Mordecai Richler, James T. Farrell and Jack Geoghegan.
Among the correspondents in the 1970s files are: Douglas Fetherling, Robert LaPalme, Michèle Tisseyre, Robert Weaver, Edmund Wilson, David Helwig, Cynthia Scott, Thomas Chastain, Desmond Pacey, Kenneth Dyba, Hans Selye, James T. Farrell, Floyd Chalmers, Robert Christie, Harold Loeb, Pierre Berton, Malcolm Ross, Robertson Davies, Brian Doherty, Carl Klinck and Frank Watt.
Among the correspondents in the 1980s file are: Jack Kent Cooke and Al Purdy. There are letters from Irving Layton and Herbert Whittaker dated 1992.
