The Copyright Monographs Database at the U.S. Copyright Office is a collection of records of a variety of works, including monographic literary works, works of the performing and visual arts and sound recordings, and renewals of previously registered works of all classes.
A quick search of the "Books, Music, etc." module for last-name, first-name "reed, henry" brings up 20 records, 16 of which are for our Henry. These include his translations of Ugo Betti (The Burnt Flower-Bed, Summertime, The Queen and the Rebels, and Crime on Goat Island); Luigi Pirandello's All for the Best; Dino Buzzati's Larger Than Life; Paride Rombi's Perdu and His Father; and Balzac's Père Goriot.
The database also has records for the copyrights of two poems set to music by Sir Arthur Bliss: "The Enchantress" (1951), and "Aubade for Coronation Morning" (1953). "The Enchantress" is a translation of Theocritus's "Second Idyll," while "Aubade" was one of ten modern madrigals commissioned for a concert on the eve of the coronation of Queen Elizabeth II (A Garland for the Queen).
For more copyright fun, check out the WATCH project: Writers, Artists and Their Copyright Holders.