This collection contains papers pertaining to the Craig Callister family, dating from 1836 to 1965. The majority of this collection are papers from Thomas Clark Callister, Jr., though papers relating to other family members, such as Noble Peterson, Millie Peterson, and William Kropfli also appear. Materials from Thomas Clark Callister, Jr. include journals, items relating to the Millard County Telegraph and Telephone Company, and correspondence from his time as mayor of Fillmore, Utah. Papers from other relatives include journals, correspondence, financial records, and other personal documents. The last box in this collection contains a number of postcards, certificates, and letters written in other languages, mainly German. The documents appear to be connected to William Kropfli's ancestors.

The materials in boxes 1a through 1e were added to the collection in 2013. They mostly contain incoming and outgoing correspondence related to the Callister family, particularly Thomas Clark Jr., Millie Peterson Callister, and their children and relatives. In addition to the information these cards contain about the Callister family and their life in Millard County, they also provide excellent examples of early 20th century greeting cards. There are also several miscellaneous documents, including several items related to local Millard County events, descriptions of home decorating in 1912, and movie advertisements for In Old Kentucky (1919), Dinty (1920), and Too Much Speed (1921). The last box holds several account books and diaries of T. Clark Callister, Jr. dating from 1909 to 1956. The correspondence is organized by recipient or sender, then date, when possible, and by holiday otherwise. The diaries are housed chronologically.