Pix of Knud Henderson's, Ludvig Lindeman's Norwegian koralboker on Flickr

Found while trying to learn more about Knud Henderson, for the psalmodikon piece ... a query on Yahoo! ANSWERS by AnnG: "Have some old books that R not english. I need 2 find someone who could tell me what language they R?" They're available at AnnG1951's photostream on Flickr ... a lot of them are Norwegian devotional works, Luther's Small Catechism and commentary on Galatians, ... a clothbound Sangbogen (pub. by ??) with a song "Her samles vi" by Lina Sandell arranged by an A.L. Skoog that appears to be in Dano-Norwegian instead of Swedish. Andrew L. Skoog is listed in Hymnary.org ... listed elsewhere as a translator of Swedish spiritual songs.

Several copies of the Koralbog by Knud Anderson, published in Chicago: John Anderson Publishing Co., 1906 and thereabouts in early 20th century.

Also: (1) a title page for Koralbog, indeholdende Melodier til Salmebog for lutherske Kristne i Amerika, til Landstads, Synodens og andere Psalmeböger, udsatte for blandet Kor, Orgel eller Pianoforte. Ludw. M. Lindemans Koralbog. Appears to be an American edition of Ludwig M. Lindeman's Koralbog (pub. 1872, 1877 in Norway); and (2) an edition of M.B. Landstad's Kirkesalmebog published in Minneapolis, sold at Frikirkens Boghandel [orig. pub. in Norway in 1869, date not in picture].

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The money quote from "A Singing Church" by Paul Maurice Glasoe [Norwegian-American Studies 13 (1943) 92ff].

While Knud Henderson contributed very little to the choir literature of Norwegian-American pioneer history, he did a great service in the publication of the first Norwegian-American Koralbog, which appeared as early as 1865. More than twenty thousand copies of it were sold between the years 1865 and 1915. {9} He came to Chicago as a fourteen-year-old boy and in addition to his high-school education he had a thorough course in the rudiments of music. While he taught music and did some publishing, he resorted to other occupations as well; for eighteen years he did art painting and worked for a manufacturer of wagons and agricultural machinery. It is pretty certain that Henderson conducted the first singing schools among Norwegian pioneer youth. He interested himself in the salmodikon as a practical tool of instruction in singing and issued a Practical Manual for the Use of the Salmodikon.

Also some very good reminiscences of Glasoe's father using the psalmodikon in 1870s in rural Minnesota.