Following Sandy's lead, your library excursion could also look for:The Frank C Brown collection of North Carolina Folklore Vol 2. which has 9 full length version and about twice that number of less complete variants and minor wording differences.
Vance Randolph's "Ozark Folk Songs Vol 1" has 7 long versions plus some minor variants.
The same for Cecil Sharp's "English Folk songs From the Southern Appalachians" 7 long versions and a bunch of minor lyric variations and also several alternative tunes.
"A Song CAtcher in Southern Mountains" by Dorothy Scarborough has 9 texts and 5 tunes.
rich r