Listen to the mocking bird / melody by Richard Milburn ; written and arranged by Alice Hawthorne" (the same edition; at Ameican Memory) has clearer images.

Listen to the mocking bird, Ethiopian ballad / by Richard Milburn; written and arranged by Alice Hawthorne (1855; also at American Memory) has the same piano arrangement as in the first edition.

I don't think Winner composed "Johnny Has Gone for a Slodier" or "Ten Little Indians". "'Twas at the Siege of Vicksburg" has been posted HERE.