Contains journals and a letter created and collected by Smoot during his service as a Latter-day Saint missionary in Samoa and Tonga between 1889 and 1892. Also includes transcriptions of the journals prepared by Loretta Nixon.

Comprised of the journal of Sioeli Kauvaka and a volume of family history information compiled by Sisi Kafa and Paul F. Muti. The family history chronicles the lives of 'Amelia Toloa and 'Aisake Ta'e'aonga Sika and their descendants, including Sioeli Kauvaka. Most of the events described took place in Tonga, and the journal is written in Tongan. Kauvaka's journal is dated 1938-1961, and the family history was published in 2016.

Contains a journal written by Frost between 1954 and 1958. The journal covers some of his experiences at Arizona State College, but more particularly includes his Latter-day Saint mission to Tonga. Also includes a digital transcription of the journal. Dated 1954-1958.

The Thomas Farrar Whitley missionary diaries, 1935-1938 includes the diary typescript. The typescript includes an introduction containing biographical information about Whitley and historical background about Tonga.

Collection includes photocopies of the journal written by Bryan Winward during his mission to Tonga between 1916 and 1919. Also includes photocopies of photographs from the period.