Letter from the Japanese Association of Oregon to Masuo Yasui. In the letter the Education Department of the Japanese Association of Oregon proposes a visit to Hood River, Parkdale, and Dee to establish communication in order to help with the education of the second generation in the area.
Translation Note: This document has been translated into modern Japanese and English.

Letter of resignation from Masuo Yasui to the Japan-America Formal Society of Hood River dated 28 November 1928. In the letter Yasui resigns from his position as a board member and committee member.
Translation Note: This document has been translated into modern Japanese and English.

A letter from Senichi Tomihiro to Masuo Yasui dated 31 December, 1934. In the letter Tomihiro congratulates Masuo for receiving an award from the Japan-America Industrial Association. He expresses his admiration for the hard work that led to Masuo's achievement and acknowledges the support of Masuo's wife and brother. Translation Note: This document has been translated into modern Japanese and English.