Diaries spanning Reverend John R. Metcalfe's entire career as a Methodist missionary and are of particular historical interest for his 37 years in Solomon Islands from 1920-1957. Metcalfe was appointed to Solomon Islands in 1920. After a brief period at Roviana, he was appointed to Choiseul (Lauru island) as assistant to the Rev. V. LeC. Binet. Apart from four years at Teop, he remained on Choiseul (with a break during the war) until 1951. He was then appointed chairman of the Methodist Mission in the Solomons.

See also PMB MS 74 through to MS 80.