When Norman Hapgood became editor of '' Collier 's '' in 1903 , he attracted many leading writers . In May 1906 , he commissioned Jack London to cover the San Francisco earthquake , a report accompanied by 16 pages of pictures . Under Hapgood 's guidance , '' Collier 's '' began publishing the work of investigative journalists such as Samuel Hopkins Adams , Ray Stannard Baker , C.P. Connolly and Ida Tarbell . Hapgood 's approach had great impact , resulting in such changes as the reform of the child labor laws , slum clearance and women 's suffrage . In April 1905 , an article by Upton Sinclair , " Is Chicago Meat Clean ? " , persuaded the Senate to pass the 1906 Meat Inspection Act
San Francisco earthquake
1906 San Francisco earthquake
Collier's