Working in the 1900s By AntleyS Period: Sep 14, 1901 to Mar 4, 1909 Theodore Roosevelt becomes president Feb 5, 1905 construction of the Pennsylvania Station Begins Period: Feb 5, 1905 to Nov 17, 1910 Construction of the Pennsylvania Station 1905 Opened: November 27, 1910 Jul 2, 1908 Excavation at night is painted Period: Aug 14, 1929 to Apr 14, 1939 The Great Depression Oct 31, 1938 Sailors and Ships is painted The female percentage of the U.S. workforce increased from 27 percent to nearly 37 percent Period: Sep 1, 1939 to Sep 2, 1945 World War II Apr 21, 1940 Women Enter the Work Force Mar 8, 1942 The Image of Rosie the Riveter is born Aug 6, 1943 The Day Shift is painted