From what I've seen of CyberHymnal I would not consider it the authority for anything. I'd be more likely to put my money on their composers & dates than their words.

Words for these kinds of hymns have been subjected not just to the folk process but the theological process as well. Hymnbook compilers have felt free to tweak words since the beginning of their publishing. One reason one must always watch words when using a different hymnal.

I'll check a couple of older hymnals that I have, but don't expect much. Your best authority for dates, etc. is the hymnal companion if one has been done. The Episcopal Church did the mother of all companions a few years ago. Never Grow Old, however, is not the hymnal so it's not in the companion. If it's in Broadman, it's companion has a reputation of being good. Also good are books with titles like the story behind the hymns, but which hymns are included is the writer's personal selection.

Praise, don't feel bad about just learning these songs now. I had them is small doses as a child & can enjoy them. I know people who grew up on them who really can't stand them any more. Unmixed with other types of 'standard' hymns they can get a bit boring after a while. :-) The oddest thing to me is a couple of Jewish Sacred Harp singers I know who are getting into these songs. It sure is making me take another look at Bliss, Barnby, etc.