- Jul 1 1st x-ray photo of entire body, taken by Arthur Fuchs of Eastman-Kodak Company in Rochester, New York
- Jul 1 Brookfield Zoo opens in Chicago, Illinois
- Jul 2 General Lazaro Cardenas elected president of Mexico
- Jul 3 FDIC pays off 1st insured depositors, Fon du Lac Bank, East Peoria, Illinois
Atomic Chain-reaction Patented
Jul 4 Hungarian physicistLeó Szilárd patents the chain-reaction design for the atomic bomb
- Jul 4 Jordanians revolt in Amsterdam after reduction in employment
- Jul 5 "Bloody Thursday" - Police open fire on striking longshoremen in San Francisco
Gehrig's Record Grand Slam
Jul 5Lou Gehrig hits record 17th career grand slam in Yankees 8-3 win v Washington, passesBabe Ruth's total
Ryan Wins 12th Doubles Title
Jul 6 American doubles specialistElizabeth Ryan wins her 12th Wimbledon doubles title as she and Simone Mathieu of France defend their crown 6-3, 6-3 vs Dorothy Andrus & Sylvie Henrotin
Perry Defeats Crawford
Jul 6 Wimbledon Men's Tennis: Home favouriteFred Perry beats Australian Jack Crawford 6-3, 6-0, 7-5 for the first of 3 straight Wimbledon titles
- Jul 7 Mary Hirsch, daughter of 3-time Kentucky Derby winning trainer Max Hirsch, becomes first woman to be licensed to train thoroughbred horses in the United States
- Jul 7 Wimbledon Women's Tennis: Dorothy Round Little of England beats AmericanHelen Jacobs 6-2, 5-7, 6-3 for her first Wimbledon singles title
German History
Jul 9 SS-ReichsfuehrerHeinrich Himmler takes command of German concentration camps
Sports History
Jul 10 AL wins 9-7 at Polo Grounds, NYC; NL pitcherCarl Hubbell strikes outBabe Ruth, Lou Gehrig,Jimmie Foxx, Al Simmons, andJoe Cronin for an MLB All-Star Game record for consecutive strikeouts
Event of Interest
Jul 10Franklin D. Roosevelt visits Colombia, becoming the first sitting US president to visit South America
- Jul 11Franklin D. Roosevelt becomes the first US President to travel through the Panama Canal
- Jul 12 US Disciplinary Barracks on Alcatraz Island abandoned
- Jul 12 Willy de Supervise swims world record in 400 m (5:16.0)
- Jul 14 116°F (47°C) is recorded in Orogrande, New Mexico, setting a state record, which is later broken on June 27, 1994
- Jul 14 Philadelphia Phillies score 11 runs in an inning, beating Cincinnati 18-0
- Jul 14 The New York Times erroneously declaresBabe Ruth's 700 home run record to stand for all time
- Jul 15 Continental Airlines commences operations
- Jul 17Babe Ruth draws his 2,000th base on balls at Cleveland
- Jul 20 118°F (48°C), Keokuk, Iowa (state record)
- Jul 21 113°F (45°C), near Gallipolis, Ohio (state record)
The Death of John Dillinger
Jul 22 Outside Chicago's Biograph Theatre, "Public Enemy No. 1"John Dillinger is mortally wounded by FBI agents
Bradman Makes 304
Jul 23 Australian cricket batting legendDon Bradman completes 304 in drawn 4th Test vs England at Leeds; 430 minutes, 43 x fours, 2 x sixes
PGA Men's Championship
Jul 29 PGA Championship Men's Golf, Park CC: Paul Runyan wins the first of his two PGA crowns, defeatingCraig Wood in 38 holes
- Jul 31 International Lawn Tennis Challenge, Wimbledon:Fred Perry beats American Frank Shields 6-4, 4-6, 6-2, 15-13 to give Great Britain unassailable 3-1 lead to retain title; ends 4-1












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