District 4 Offices: Blaine, Camas, Cassia, Gooding, Jerome, Lincoln, Minidoka, and Twin Falls Counties. HQ located in Shoshone. Collections are oriented around transportation projects occurring within these boundaries and tend to be modern (1960s through early 2000s), highlighting major transportation achievements. Some duplication between the headquarters and district collections is to be expected. District Four Topics: Highway Projects 1994-1997, Wildish, Sweetzer, Hailey, Ketchum, Shoshone, Twin Falls, Clear Lakes, Big Wood River, Malad Gorge, and the Snake River Canyon.