Correspondence between Otis C. Miller and Lola B. Miller dating from 1921 to 1931. Most are from Otis to Lola when he traveled through parts of Montana, Wyoming, Utah, Idaho, Nevada, Oregon, and Washington. Otis was a traveling salesman who sold fire extinguishers, plumbing and heating equipment. The other letters are to Otis from his parents or Lola. Also included are several postcards, a packet of calling cards belonging to Lola, and a loan payment booklet.