So, the 1869 article is essentially "worthless." Funny -- If I remember right, that is the source from which the OED gets its first incidence of the word "shanty."

The 1868 article gives several items that were new at the time -- that is, I have not seen them in print before that. They are:

GOODBYE FARE YOU WELL
SACRAMENTO
RIO GRANDE
PADDY LAY BACK
"Good morning ladies all"
"Nancy Bell"
"Sally in the Alley"
"And England's blue forever"
LOWLANDS AWAY
"Oceanida"
"Johnny's gone"
BLACKBALL LINE
SLAPANDERGOSHEKA
HANDY MY BOYS
"Land ho, boys"
HAUL AWAY JOE
BONEY

Of these, Adams' later published work provides evidence that HAUL AWAY JOE and BONEY were already in existence.

"Good morning ladies all" and, possibly, "Johnny's Gone" (if related to "Jenny's Gone Away"), may have appeared earlier as corn-shucking songs.

And the author gives some unique verses to CHEERLY, too.