June 23, 2006: The St. Louis Cardinals sent Rich Rundles to the New York Mets as part of a conditional deal.
April 4, 2004: The St. Louis Cardinals traded Wilson Delgado to the New York Mets for Roger Cedeno.
March 18, 2000: The St. Louis Cardinals traded Joe McEwing to the New York Mets for Jesse Orosco.
July 31, 1999: The New York Mets traded Craig Paquette to the St. Louis Cardinals for Shawon Dunston.
June 10, 1998: The New York Mets traded Shawn Gilbert to the St. Louis Cardinals for Wayne Kirby.
March 28, 1998: The New York Mets traded Juan Acevedo to the St. Louis Cardinals for Rigo Beltran.
January 22, 1996: The New York Mets traded Yudith Ozorio (minors), Erik Hiljus and Eric Ludwick to the St. Louis Cardinals for Bernard Gilkey.
December 13, 1991: The St. Louis Cardinals traded Clyde Keller (minors) to the New York Mets for Chuck Carr.
April 2, 1985: The New York Mets traded Mark Davis (minors) and Jose Oquendo to the St. Louis Cardinals for John Young (minors) and Angel Salazar.
April 5, 1984: The St. Louis Cardinals purchased Gary Rajsich from the New York Mets.
June 15, 1983: The New York Mets traded Neil Allen and Rick Ownbey to the St. Louis Cardinals for Keith Hernandez.
December 10, 1979: The New York Mets traded Jody Davis to the St. Louis Cardinals for Ray Searage.
December 5, 1978: The New York Mets traded Tom Grieve and Kim Seaman to the St. Louis Cardinals for Pete Falcone.
October 2, 1978: The New York Mets traded Paul Siebert to the St. Louis Cardinals for Bob Coluccio.
June 15, 1977: The New York Mets traded Mike Phillips to the St. Louis Cardinals for Joel Youngblood.
March 30, 1977: The New York Mets traded Benny Ayala to the St. Louis Cardinals for Doug Clarey.
December 9, 1976: The New York Mets traded Leon Brown and Brock Pemberton to the St. Louis Cardinals for Ed Kurpiel (minors).
December 11, 1974: The New York Mets traded Ted Martinez to the St. Louis Cardinals for Jack Heidemann and Mike Vail.
October 13, 1974: The New York Mets traded Tommy Moore and Ray Sadecki to the St. Louis Cardinals for Joe Torre.
October 18, 1971: The St. Louis Cardinals traded Jim Beauchamp, Chip Coulter, Harry Parker and Chuck Taylor to theNew York Mets for Jim Bibby, Rich Folkers, Charlie Hudson and Art Shamsky.
September 15, 1971: The New York Mets traded Ron Allen to the St. Louis Cardinals for Bobby Etheridge.
December, 1968: The New York Mets traded Jerry Buchek to the St. Louis Cardinals for Jim Cosman.
July 16, 1967: The New York Mets traded Jack Lamabe to the St. Louis Cardinals for a player to be named later. TheSt. Louis Cardinals sent Al Jackson (October 13, 1967) to the New York Mets to complete the trade.
April 1, 1967: The New York Mets traded Eddie Bressoud, Danny Napoleon and cash to the St. Louis Cardinals forJerry Buchek, Art Mahaffey and Tony Martinez.
October 20, 1965: The New York Mets traded Al Jackson and Charley Smith to the St. Louis Cardinals for Ken Boyer.
December 7, 1964: The St. Louis Cardinals traded Johnny Lewis and Gordie Richardson to the New York Mets for Elio Chacon and Tracy Stallard.
November 4, 1963: The St. Louis Cardinals traded George Altman and Bill Wakefield to the New York Mets for Roger Craig.
August 5, 1963: The St. Louis Cardinals traded Ed Bauta to the New York Mets for Ken MacKenzie.
July 29, 1963: The New York Mets traded Jacke Davis and cash to the St. Louis Cardinals for Duke Carmel.