The correspondents are:
Jonas Salk, Milton Salton, Mr Damon R Salzman, Paul Krueth (Subscription Services, W B Saunders Company), Ms Danelle A M K Schinkler (Turtle Mountain Community School), Dr Hasse Schroder, Howard Schulman, John Schumaker, Maria Ann Gibbons (Science), Bernard E Scott (Chief Scientist, Logos Corporation), Dr John Searle, Francis Crick on Allen Selverston, John B Severson (Cannon Falls High School), Dr Ezra Shahn, Dr Benny Shanon, Dr Colin Shapiro, Dr Lokendra Shastri, Prof S Murray Sherman, Mr Harvey Shoolman (Commissioning Editor, Blackwell Scientific Publications Ltd), William H Shore (Share Our Strength), Ralph M Siegel, Dr Maxine Singer, Dr Wolf Singer, James Kimberly (Development Consultant, Skeptical Inquirer), Paul Kurtz (Chairman, Skeptical Inquirer), Mr Lee Nisbet (Committee for the Scientific Investigation of Claims of the Paranormal), Dr James E Skinner, Ms Amy Smith, J R Smythies, Jeffrey W Kirsch (Executive Director, Space: Theatre & Science Centre), Dr Richard Squires, William W Stanhope, Dr H Bradford Stanton (Executive Editor, The MIT Press), Barry Evans (StarWatch), Ms Jean Stein, Prof Joan A Steitz, Mr Magnus Stensmo, Matthew Stiller, Hilton Stowell, Bernard L Strehler, Heidi Stroessner-Johnson, Beth O'Connor (Executive Vice President, The Summit Organization, Inc), Prof N S Sutherland, Thomas P Sutula, Dr Larry Swanson, and Dr Nick V Swindale.
A letter detailing sensitive personal circumstances has been extracted to file PP/CRI/J/1/3/21.