John Hartford wrote and recorded LIKE UNTO A MOCKINGBIRD. It's on 3 of his albums: "Gentle on My Mind," RCA Victor LSP-4068, 1968; "Iron Mountain Depot," RCA Victor LSP-4337, 1970; and "Natural To Be Gone 1967-1970," Raven 138, 2002.

I think the last one is the only one currently in print.