Bill, I'll Betcha your "Heritage collection" by Jerry Silverman is now the two-volume Chappell book called "Jerry Silverman's Folk Song Encyclopedia," copyright 1975. It's available through Hal Leonard for $19.95 for each of the two volumes (softcover) - and I think it's worth every penny.
The first song in Volume I is "Starving to Death on a Government Claim." The last song, on page 421 of volume II, is "Byker Hill." The picture on the cover is the back of somebody wearing a blue denim jacket with an American eagle on it - you know, the breed of eagle with a stars & stripes shield on its chest and arrows and an olive branch for claws. So, is THAT the book you got, Bill? What was the original price & cover design?
-Joe Offer-