Letters written by Charles Sibley to his father at a variety of addresses in California and Arizona during the teens and 1920s, and to Connecticut in the 1930s. 1913 letters include letters from his sister and his mother. Letters from Charles are fairly complete from the fall of 1916 to the end of 1917. The 1916 letters discuss food and money, while the 1917 ones include mentions of war and SATC military maneuvers.