Transactions listed are from November 1 of previous year to April 1 of the following year.
The New York Giants signed Dave Bancroft as a free agent.
The Chicago White Sox purchased Smead Jolley from San Francisco (PCL).
The Boston Braves traded Art Delaney, George Harper and cash to Los Angeles (PCL) for Wally Berger.
The St. Louis Cardinals traded Pete Alexander and Harry McCurdy to the Philadelphia Phillies for Bob McGraw and Homer Peel.
The St. Louis Browns traded Wally Schang to the Philadelphia Athletics for Sammy Hale.
The St. Louis Cardinals signed Dizzy Dean as a free agent. (Date given is approximate. Exact date is uncertain.)
The St. Louis Cardinals signed Johnny Mize as an amateur free agent.
The New York Yankees purchased Ken Williams from the Boston Red Sox.
The Cincinnati Reds selected Leo Durocher off waivers from the New York Yankees.
The Cincinnati Reds traded Dolf Luque to the Brooklyn Robins for Doug McWeeny.
The Boston Braves purchased Owen Kahn from Manchester (New England).
The Philadelphia Athletics selected Spencer Harris off waivers from the Detroit Tigers.
The Washington Senators selected Earl Webb off waivers from the Cincinnati Reds.
The Boston Braves traded Percy Jones and cash to the Pittsburgh Pirates for Burleigh Grimes.
The St. Louis Cardinals traded Wally Roettger to the New York Giants for Doc Farrell and Showboat Fisher.
The Washington Senators traded Earl Webb to the Boston Red Sox for Bill Barrett.
The New York Yankees traded Cedric Durst and $50,000 to the Boston Red Sox for Red Ruffing.
The Boston Braves selected Tom Zachary off waivers from the New York Yankees.
The St. Louis Cardinals traded Clarence Mitchell to the New York Giants for Ralph Judd.
The New York Giants traded Larry Benton to the Cincinnati Reds for Hughie Critz.
The New York Giants traded Pat Crawford to the Cincinnati Reds for Ethan Allen and Pete Donohue.
The New York Yankees traded Waite Hoyt and Mark Koenig to the Detroit Tigers for Ownie Carroll, Harry Rice and Yats Wuestling.
The Philadelphia Phillies selected Tony Rensa off waivers from the Detroit Tigers.
Pittsfield (Eastern) purchased Owen Kahn from the Boston Braves.
The Washington Senators traded Red Barnes to the Chicago White Sox for Dave Harris.
The Washington Senators traded Goose Goslin to the St. Louis Browns for Alvin Crowder and Heinie Manush.
The Washington Senators traded Garland Braxton and Bennie Tate to the Chicago White Sox for Art Shires.
The St. Louis Cardinals traded Fred Frankhouse and Bill Sherdel to the Boston Braves for Burleigh Grimes.
The Chicago White Sox traded Bill Hunnefield and Bob Weiland to Toledo (American Association) for Greg Mulleavy.
The Chicago White Sox signed Blondy Ryan as an amateur free agent.
The Chicago Cubs selected Doc Farrell off waivers from the St. Louis Cardinals.
The New York Yankees purchased Ken Holloway from the Cleveland Indians.
The Cincinnati Reds released George Kelly.
The Philadelphia Phillies released By Speece.
Minneapolis (American Association) signed George Kelly as a free agent.
The Chicago White Sox selected Bob Fothergill off waivers from the Detroit Tigers.
The St. Louis Browns purchased Alex Metzler from the Chicago White Sox.
The Pittsburgh Pirates traded Fred Brickell to the Philadelphia Phillies for Denny Sothern.
Minneapolis (American Association) traded George Kelly to the Chicago Cubs for Mal Moss. The Chicago Cubs sent Chick Tolson (August 22, 1930) to Minneapolis (American Association) to complete the trade.
The Chicago White Sox purchased Luke Appling from Atlanta (Southern Association).
The New York Yankees traded a player to be named later and 3 players to San Francisco (PCL) for a player to be named later and Frankie Crosetti. The New York Yankees sent Julie Wera (1931) to San Francisco (PCL) to complete the trade.
The Chicago Cubs purchased Jesse Petty from the Pittsburgh Pirates.
The Washington Senators purchased Pinky Hargrave from the Detroit Tigers.
The Cincinnati Reds purchased Ownie Carroll from the New York Yankees.
The Boston Braves selected Hal Haid off waivers from the St. Louis Cardinals.
The Cincinnati Reds drafted Casper Asbjornson from Nashville (Southern Association) in the 1930 rule 5 draft.
The Philadelphia Phillies drafted Stew Bolen from Baltimore (International) in the 1930 rule 5 draft.
The Boston Red Sox drafted Jim Brillheart from Minneapolis (American Association) in the 1930 rule 5 draft.
The Brooklyn Robins drafted Pea Ridge Day from Kansas City (American Association) in the 1930 rule 5 draft.
The Boston Braves drafted Bill Dreesen from Springfield (Eastern) in the 1930 rule 5 draft.
The Chicago White Sox drafted Ike Eichrodt from New Orleans (Southern Association) in the 1930 rule 5 draft.
The Cleveland Indians drafted Bill Hunnefield from Toledo (American Association) in the 1930 rule 5 draft.
The Washington Senators drafted Buck Jordan from Newark (International) in the 1930 rule 5 draft.
The Philadelphia Phillies drafted Fred Koster from Little Rock (Southern Association) in the 1930 rule 5 draft.
The Boston Red Sox drafted Wilcy Moore from St Paul (American Association) in the 1930 rule 5 draft.
The Philadelphia Athletics drafted Eddie Phillips from Toronto (International) in the 1930 rule 5 draft.
The New York Giants drafted Urbane Pickering from Birmingham (Southern Association) in the 1930 rule 5 draft.
The Boston Braves drafted Earl Sheely from San Francisco (PCL) in the 1930 rule 5 draft.
The Cincinnati Reds drafted Frank Sigafoos from Los Angeles (PCL) in the 1930 rule 5 draft.
The St. Louis Browns drafted Frank Waddey from Memphis (Southern Association) in the 1930 rule 5 draft.
The New York Yankees drafted Lefty Weinert from Louisville (American Association) in the 1930 rule 5 draft.
Bob Weiland sent from Buffalo (International) to the Chicago White Sox in an unknown transaction.
The Chicago Cubs purchased Les Sweetland from the Philadelphia Phillies.
The Brooklyn Robins traded Clise Dudley, Jumbo Elliott, Hal Lee and cash to the Philadelphia Phillies for Lefty O'Doul and Fresco Thompson.
The Chicago Cubs purchased Jakie May from the Cincinnati Reds.
The Chicago Cubs traded Bill McAfee and Wes Schulmerich to the Boston Braves for Bob Smith and Jimmy Welsh.
The Cincinnati Reds purchased Wally Roettger from the New York Giants.
The Pittsburgh Pirates traded Dick Bartell to the Philadelphia Phillies for Tommy Thevenow and Claude Willoughby.
The Boston Braves selected Al Bool off waivers from the Pittsburgh Pirates.
The Cincinnati Reds traded Marty Callaghan, Pat Crawford and cash to Hollywood (PCL) for Mickey Heath.
The New York Yankees purchased Julie Wera from Jersey City (International).
The New York Yankees traded Jack Hopkins (minors), Ken Holloway and cash to Baltimore (International) for Thomas Patten (minors) and Jim Weaver.
Portland (PCL) traded Herb Lahti (minors) to the Philadelphia Athletics for Ossie Orwoll and Homer Summa.
Indianapolis (American Association) traded Oral Hildebrand to the Cleveland Indians for Les Barnhart, Zeke Bonura and Ed Montague.
Baltimore (International) purchased Bernie James from the Boston Braves.
The New York Yankees purchased Cy Perkins from the Philadelphia Athletics.
The Boston Red Sox purchased Muddy Ruel from the Washington Senators.
The Philadelphia Phillies signed Bob Adams as an amateur free agent.
The Cincinnati Reds selected Clyde Beck off waivers from the Chicago Cubs.
The Philadelphia Athletics selected Johnnie Heving off waivers from the Boston Red Sox.
The Pittsburgh Pirates selected Bill Regan off waivers from the Boston Red Sox.
The Washington Senators selected Harry Rice off waivers from the New York Yankees.
Oakland (PCL) traded Ernie Lombardi to the Brooklyn Robins for Hank DeBerry and Eddie Moore.
The Cleveland Indians released Joe Sewell.
Toledo (American Association) purchased Johnny Cooney from the Boston Braves.
The New York Yankees signed Joe Sewell as a free agent.
The Pittsburgh Pirates purchased Eddie Phillips from the Philadelphia Athletics.
The Boston Braves purchased Ken Jones from Reading (International).
The Chicago White Sox traded $22000 and 2 players to Louisville (American Association) for Mel Simons.
The Chicago Cubs released George Kelly.
The Philadelphia Athletics purchased Phil Todt from the Boston Red Sox.
The Cincinnati Reds selected Edd Roush off waivers from the New York Giants.
Kansas City (American Association) purchased Bobo Newsom from the Brooklyn Robins. (Date given is approximate. Exact date is uncertain.)