Idaho History--A Timeline from 1920s to 1950s By davenboise Period: Mar 17, 1920 to Mar 17, 1950 Idaho Moments in History 1920 to 1950s Mar 17, 1926 Airmail Service 1926 the first commercial airmail service begins in Boise, Idaho Mar 17, 1930 Idaho population 445,032. Jan 1, 1934 Idaho becomes nation's leading silver producer. Mar 17, 1936 Sun Valley resort is established by the Union Pacific Railroad. World's first ski chair lift opens at Sun Valley. Mar 17, 1939 Joe Albertson opens his first supermarket in Boise Jan 1, 1941 J.R. Simplot begins potato dehydration J.R. Simplot begins potato dehydration operations in Caldwell Mar 17, 1942 Japanese-Americans are placed in internment camp near Eden. Mar 17, 1949 National Reactor Testing Station (NRTS) is established. Mar 17, 1950 Idaho population 588,637 Mar 17, 1953 Television comes to Idaho with KIDO-TV in Boise
