Anderson carried on a voluminous correspondence in Norwegian, English, and other languages, covering all the phases of his career. Also in this collection are translations, articles, and addresses; social memorabilia for his years in the diplomatic service; an account book for a Mexican rubber plantation; diaries kept by Mrs. Anderson, 1876-1889 (with gaps); and other financial records. More than 2,500 correspondents are represented in the collection. Among them are his classmates at Luther College, Decorah, Iowa; faculty members there and at Albion Academy; aspiring writers and translators of Scandinavian literature; notable critics and authors; newspaper and magazine editors; book publishers and dealers; churchmen; committees seeking Anderson's services as a lecturer; guests whom he had entertained; personal friends; pioneer Norwegian settlers giving historical information; diplomats; travelers; and, in general, almost everyone in the United States and many in foreign countries interested in the study of Scandinavian life and literature. Included are literary figures Bjornstjerne Bjornson, Georg Brandes, Knut Hamsun, Jonas Lie, Viktor Rydberg, and Thorstein Veblen.
