Q - addenda

The "Plantation Echo" is on a single loose sheet that was inserted in the Republican Songbook. There are no lyrics to it, and it's in some sort of strange notation I've not seen before.

A dotted line horizontally through the middle.
Vertical bars apparently mark off measures and beats.
Numbers above the dotted line, I would guess are "pitches" of a sort - probably something like "Nashville" notation.
Numbers below the dotted line, similarly, would "complete" a two-note "chord"(?)

Some numbers in the upper row are underlined, which I'm guessing means "up an octave," and some in the lower row have a thicker underline - maybe down(?).

The number in the lower row that's at the beginning of a measure has a large "dot" under it, unless it's underlined (a rhythm mark?).
Some of the numbers in the upper row have a small circle and a dot above them in two of the three songs/tunes.

"Plantation Echo" says it's "four-quarter time", and the spacing used would probably allow indication of 16th notes, although this tune is mostly halves and quarters, with one or two possible eighths if I'm reading it right.

All of the numbers - all three tunes - apparently are between 1 and 7.

Unless someone familiar with this notation wants to take a try at it, I'll probably try to convert it by guess to standard notation to see if I can make a midi that sounds like a tune.

"All on Account of the Mugwumps" says it's to the tune "All on Account of Eliza." Maybe that was a familiar tune in 1888? Credited to an "R. Campaign," as are virtually all of the songs in this book.

John