A 1945 book written by Sigmund Spaeth. A Treasury of American Songs — Some Sad, More Merry, Some Sentimental; with a Wealth of Amiable Anecdote, Comment and Fascinating Folk-Lore — a Flavorful Feast of Melodious Music. Foreword by Richard Rodgers.
Check out this interesting book for free here:
https://archive.org/details/reademweep0000sigm/page/n9/mode/2up
Other books by Sigmund Spaeth:
Barber Shop Ballads
Milton’s Knowledge of Music
The Common Sense of Music
Words and Music