Toons You Might've Missed: The Legend of John Henry (1974)

I remember seeing a promo for this next item on HBO in its formative years in the mid-70's, but it also played in libraries and schools, too.

The Legend of John Henry, produced by Nick Bosustow, and told & sung by singer Roberta Flack, looks like it might've lifted the character designs from a book, hence the library connection. Scope:

Rating: B.