Topic
Weather, Natural Disasters, Emigration & Immigration, United States / State & Local / MidWest (IA, Il, in, Ks, Mi, MN, Mo, Nd, Ne, Oh, Sd, Wi), United States / 19th Century, Ecosystems & Habitats / Plains & Prairies, Adventurers & Explorers, General, Modern / 19th Century, United States / General