Series comprises the Colbert Agency's correspondence files with their clients. As well as letters to and from the clients, the files contain copies of agreements and contracts, correspondence with publishers and producers (including the CBC), outlines of books or projects, reviews, general clippings, resumés, royalty statements and other financial records.
Among the many clients represented in this series, there is extensive material on the following: Allen Abel, Barbara Amiel, Doris Anderson, Tony Aspler, Leila Basen, Richard Benner, Nella Jane Benson, David Bercuson, Carol Bolt, Douglas Bowie, John Brady, Rosemary Brown, Sharon Butala, Anne Cameron, Silver Donald Cameron, Robert Carney, Joan Clark, Robertson Davies, Elaine Dewar, A.K. Dewdney, Tony Di Franco, Arthur Drache, Frances Duncan, Kenneth Dyba, Brian Fawcett, Timothy Findley, Tony Foster, John Fraser, David French, John Frizzell, Martyn Godfrey, Ron Graham, Jack Granatstein, Paul Gross, Gail Hamilton, Michael Harris, John Kent Harrison, Jeremy Hole, Isabel Huggan, Monica Hughes, George Jonas, W.P. Kinsella, Peter Lauterman, Dennis Lee, Janet MacLean, Kevin Major, Philip Marchand, Bruce Martin, Marlene Matthews, Don McBrearty, John Metcalf, Rohinton Mistry and Frank Moher.
There is also extensive material on Steven North, Gordon Pape, Robin Phillips, Anna Porter, Sharon Riis, John Ralston Saul, Munroe Scott, Walter Stewart, Patti Stren, Carsten Stroud, Ian Sutherland, David Suzuki, Linda Svendsen, Jay Teitel, Audrey Thomas, Warner Troyer, Sugith Varughese, Margaret Visser, Clarke Wallace, Joe Wiesenfeld, Eric Wilson, Betty Jane Wylie, Scott Young and Linda Zwicker.
The series includes many other authors, including novelists, short story writers, screenwriters, journalists, popular historians, and others.