Correspondence between Dr. Cone and J. Norman Petersen, Paul Sheldon, Russell Meyers, Walker E. Swift, I.M. Tarlov, C. Fred Ferciot, H.B. Shumaker, David Slight, Frederick Tooke, J.F. Fulton, J. Kingsley, Gavin Miller, Charles E. Frosst & Co., R.E. Holmes, William Stewart, A.B. Stearns, Wilder Penfield, W.P. VanWagenen, Lawrence Fairhall, James H. Peers, J. Grafton Love, James C. White, H.G. Grant, F.W.E. Saunders, Armando Ferraro, George Laing, Gordon Norris, E.F. Mahady Company, C.L. Fuller, Everett Lyle Gage, Beverly C. Leech, W.F. Wells, Gerald Jameison, Oscar Stewart, Samueel Weaver, Peter Heinbecker, Wiley Forbus, John Lilianthal Jr. George Tieman & Co., J. Fergus Grant, Nathan Norcross, C.F. Martin, E.S. McDowell, Paul Hayes, H. Douglas Singer, Bauch & Lomb Optical Co., William Bentley, Eric Oldberg, David Miitchell, J.P.S. Cathcart, F.A.C. Scrimiger, William Gibson, Mrs. George B. Myers, Tracy Putnam, Charles Elsberg, Margaret Moag, W.B. Saunders Company, Philip Lewin, M. Abbott, Frank Ingraham, K.C. McKennie, Robert Graves.

Correspondence between Dr. Cone and Oscar Raeder, Philip H. Miller, Samuel Orton, Alice Rosenstein, Canadian Medical Association, Henry Alsop Riley, H. Sidney Herrsma, W. James Gardner, Charles Vipond, Oliver Waugh, H.H. Milburn, H.B. Shumacker Jr., Lyle Gage, Eugene Traut, James C. White, Walter Dandy, Arthur Elvidge, American Medical Aassociation, Kenneth McKenzie, J.W. Kelso, H.E. MacDermott, Robert Graves, Delavan Holmes, Gilbert Horrax, J. Godwin Greenfield, Arne Torkelson, Andrew Woods, Charles F. Martin, Robert Woods, R.B. Osgood, O.W. Jones, MacLean Gill, Peter Heinbecker, C.I. Mead, O.R. Hyndman, Bradley Patten, W.L. Treadway, E.F. Pennywitt, C.C. Coleman, Alwin Rapenheimer, Frederick Flinn, Francis Grant, James Fox Jr. John LeMoine, Loyal Davis, Max Peet, Edgar Kahn, Francis McHaughton Meta Neumann, Bob Hackett.