木下利から安井益男への手紙2通の現代日本語訳、1918年
志藤定太郎から安井兄弟への手紙の現代日本語訳
Two letters from Tadashi Kinoshita to Masuo Yasui, 1918
Newspaper clipping titled: “Federal Prisoners at McNeil’s Island Raise Game Birds and Call Ducks”
Letter from Yasui Brothers to Mr. O. H. Montgomery, 9 April 1942
Letter from Jotaro Shido to Yasui brothers
La Prath
English translation of two letters from Tadashi Kinoshita to Masuo Yasui, 1918
English translation of a letter from Jotaro Shido to Yasui brothers
Articles discussing Willamette Valley project and establishment of University of Washington Arboretum