Crandall (Crandell) Dunn served in England and Scotland for 5 years (1846-1851) alongside his wife. He was missionary responsible for converting William Geddes Lindsay (see conversion details here) and his family. [However, William Geddes' brothers, sister and parents also joined and I'm uncertain who joined first.]
Dunn's patriarchal blessing was received on 16 October 1841 from Hyrum Smith and a copy exists.
Dunn's European edition of the Doctrine and Covenants is in the possession of the LDS Church with bound in brown morocco with wavy patterned endsheets.
Source: Descriptive Bibliography of the Mormon Church Item 442
Also, Dunn's diary exists, which is in the possession of LDS Church Archives.
Dunn's preaching style is perhaps best capture in the proselytizing tract that he prepared entitle To the Seeker's of the Kingdom of God (copy available in the L. Tom Perry Special Collections at BYU) It is uknown whether William Geddes Lindsay received this actual tract.
Dunn notes in his diary that he composed To Seekers of the Kingdom of God on June 28 and 29—midway through his stay in Edinburgh, about seven months before he left Great Britain to return to America. A proselytizing tract intended to convince the unconverted of the validity of the Mormon message, it consists largely of biblical quotations leading to the conclusion on the fourth page that Jesus is the king of the kingdom of heaven, that apostles are the officers of the kingdom and the gospel is its laws, that this gospel is faith, repentance, baptism by immersion for the remission of sins, and the laying on of hands for the gift of the Holy Ghost, and that miraculous signs follow those who have obeyed the gospel. Nowhere does the tract mention the Latter-day Saints; one knows it is a Mormon piece only because of Dunn’s name at the end. Thus it is the reciprocal of Orson Pratt’s series the Kingdom of God (items 373–86): terse, without philosophical argument, and without reference to the Saints.
Source: Descriptive Bibliography of the Mormon Church Item 497
Crandall Dunn and his wife Mary Ann are buried in Box Elder County.