The text source page in the wiki says "The text source of a hymn is the major work, hymnal, or tradition (e.g. "African-American Spiritual", "French carol") of the hymn's text, if the text is taken from one." I think this should read something more like "The text source is the major work, hymnal, or tradition (e.g. "Handel's Pirates of Penzance", "Sabbath Jewels", or "African-American Spiritual") the hymn's text is taken from, if the hymnal page makes such an attribution." I'm assuming that, say, "Go tell it on the mountain" should not have "Negro Spiritual" given in the Text Source column unless the hymnal being indexed says so; if the hymnal says it is by "J. Work", that should be entered in the Text Person column. If Martin Luther is credited with "Away in a Manger" (text, tune or both) in the hymnal, it should not be "text-sourced" as "U.S. 1800s" or whatever. I would edit the wiki on this myself, but I'd rather have a real authority at least corroborate what I would recommend first.