The papers of Kathleen Boston Fox include her 272-page family history titled "Our Campbell Legacy," which chronicles the history of her Campbell and Stewart family ancestors from 18th century Scotland to their emigration to America and their westward migration to Knox County, Missouri and Ellsworth County, Kansas.

Accompanying the typescript are twenty-seven letters to Fox's great great uncle, Luther R. Johnson, and an 1866 letter from Johnson to his parents. Most of the letters to Johnson are dated 1865 or 1866, during his service in Company G of the Illinois Infantry's 58th Regiment. The letters are chiefly from his parents and his sister Sirenia, and contain news and sentiments of his family members. Included are seventeen envelopes(most of which are postmarked and addressed to Luther Johnson). Letter arrangement is chronological, interfiled with respective envelopes where relationship is identifiable.

Following the letters are handwritten personal accounts by Luther Johnson of his Johnson family history in Missouri and in the Thompson Creek area of Ellsworth County, Kansas; printed Ellsworth County lists of electoral candidates in the 1880s; an 1885 receipt for a watch purchased by Alonzo Douglas Boston; and an unsigned 1863-1865 record of hired work performed.

The Johnson surname appears variantly as "Johnson" and as "Jonson" in Fox's typescript and in the accompanying letters. "Delila" Johnson also appears variantly as "Delilah."