Charles Catto

Montreal Canadiens acquire	Date	St. Louis Blues acquire
1973 1st round pick (#8-Bob Gainey) 1973 4th round pick (#56-Alan Hangsleben) 1975 1st round pick (#9-Robin Sadler)	May 15, 1973	1973 1st round pick (#5-John Davidson) 1973 3rd round pick (#48-Bob Gassoff)

St. Louis Blues acquire	Date	Detroit Red Wings acquire
cash	May 15, 1973	1973 9th round pick (#135-Dennis O'Brien) 1973 tenth round pick (#151-Kevin Neville)

St. Louis Blues acquire	Date	New York Rangers acquire
Ab DeMarco Jr.	March 2, 1973	Mike Murphy

Los Angeles Kings acquire	Date	St. Louis Blues acquire
Frank St. Marseille	January 22, 1973	Paul Curtis

St. Louis Blues acquire	Date	Pittsburgh Penguins acquire
Joe Noris	January 8, 1973	Jim Shires

St. Louis Blues acquire	Date	Philadelphia Flyers acquire
Brent Hughes Pierre Plante	December 14, 1972	Andre Dupont 1973 3rd round pick (#40-Bob Stumpf)

St. Louis Blues acquire	Date	New York Rangers acquire
Andre Dupont Jack Egers Mike Murphy	November 15, 1972	Gene Carr Wayne Connelly Jim Lorentz

St. Louis Blues acquire	Date	New York Rangers acquire
Glen Sather Rene Villemure	October 28, 1972	Jack Egers

St. Louis Blues acquire	Date	Chicago Blackhawks acquire
Christian Bordeleau	September 15, 1972	rights to John Garrett

St. Louis Blues acquire	Date	New York Islanders acquire
cash	September 1, 1972	Brian Lavender

St. Louis Blues acquire	Date	New York Islanders acquire
cash	August 31, 1972	Dave Pulkkinen
Comment: Exact date unknown

St. Louis Blues acquire	Date	New York Rangers acquire
cash	June 8, 1972	1972 9th round pick (#137-Pierre Archambault)