For the 1910s I forgot to mention the recording (posted by Q. above) by Henry Burr and Albert Campbell of "Shenandoah." According to THIS PAGE , it was recorded on June 19, 1917. According to other info I found on the web, it reached #9 on the Billboard chart in October 1917. "Halsey K. Mohr" has been credited as composer and lyricist, though I imagine that might just mean he was "arranger". It would be interesting to know what he used as his source.

I wouldn't say this item shows any sort interest in shanties. However, I don't whether "Shenandoah," by this time, had yet become dislodged from it's strong shanties associations. Would this first "charting" recording become the basis of later popular interpretations of the song?