Logan, Robert W. Letters to the Hawaiian Board from the Caroline Islands, including Ponape, Mortlock Islands and Ruk. English language; some letters incomplete.
Logan, Robert W. and Mary. Letters to family and friends from Apaiang, Gilbert Islands and Ponape, Caroline Islands. English language; some letters incomplete.
Mahoe, Joel H. The Gilbert Island Case. Letters to and from the U. S. Department of Foreign Affairs concerning redress for the shooting of Rev. Joel Mahoe and for general protection of missionaries serving in Micronesia. English language.