Singing the Lord's Song - A History of the English Language Hymnals of the Reformed Church in America, by James Brumm. - http://images.rca.org/docs/archives/singing.pdf
Latin Hymns in English Verse - 1904 book by James Heartt Van Buren and Henry Parks Wright, including short biographical sketches. Page images at Google Print. - http://books.google.com/books?id=LPhEpNwXo-oC
The Influence of John on Christian Liturgy - Article by Gail Gresser and Felix Just, S.J. on liturgy and liturgical music. - http://catholic-resources.org/John/Liturgy.html
Hymn History - [hymnology: 40+ stories] Archives of weekly letter giving the stories behind hymns and carols - http://schaefer-family.com/hymns.htm
Hymn Studies - Brief articles by Wayne Walker. - http://www.defenderoftruth.com/page14.html
Wesleyan Theological Journal - Index of journal by year. - http://wesley.nnu.edu/wesleyan_theology/theojrnl/index.htm
Worship Map: Worship - Indexes and links on the use of music and psalms in worship. - http://www.worshipmap.com/compass/articlelist.html#music
Church Music Research Tools - (Japanese/English) bibliography; links; articles. - http://homepage3.nifty.com/dikaios/
The Past Returns to the Present - Article describing archaic British hymn-singing practices that survive in London's West Indian churches. - http://www.mustrad.org.uk/articles/hymns.htm
Reporter Interactive - Includes 100+ stories and lyrics: no index available, but site search for "History of Hymns". - http://www.reporterinteractive.org/
Singing the Psalms - History of the Psalms in Christian worship. - http://www.laudemont.org/a-stp.htm
Between Hymnbook and Textbook - Article by Ryoji Tsurumi on "Elizabeth Hill's anthologies of devotional and moral verse for late charity schools". - http://w4.ed.uiuc.edu/faculty/westbury/Paradigm/tsurumi.html
Christian Music - Article by Warren Doud: Historical, Biblical, and thematic review. - http://www.realtime.net/~wdoud/topics/music.html
Towards a Better Hymnody - Pamphlet by Frank J. Funston, calling for attention to appropriately selecting and using hymns. - http://www.mun.ca/rels/restmov/texts/pp/PP057.HTM