First Indianapolis 500 auto race is run 

Chicago White Sox Ed Walsh no-hits New York Highlanders, 1-Aug in 5 inning game 

Archaeological Institute of America forms 

A pogrom against Jews in Minsk Belorussia 

Start of Sherlock Holmes Adventure of 3 Gables (BG) 

British troops under Ian Hamilton attack the Vaal in South Africa 

Yurii Dmitrievich Sokolov, Russian mathematician who worked on the n-body problem for nearly 50 years, is born