neither of those copies is available, but if you look here
www.abebooks.com you will find several copies
MARAIS & MIRANDA, Illustrated by DIANE AND LEO DILLON
Ballantine 1964. softcover good pb words and music for guitar, 220 pages
from $2 to $8
if you search for World Folk Songs you will get over 90 matches..
some more copies of World Folk Songs were listed here..probalby
because the book dealer listed them not by author but by illustrator(s)
good luck