This article is from the Robin Hood Booklist FAQ, by Cindy Tittle Moore email@example.com with numerous contributions by others.
Dietrick, Laurabelle and Joseph Franz-Walsh, _The merry ballads of
Robin Hood_ (Illustrated by Edna Reindel, New York, The Macmillan
Company, 1931). The whole story of that Robin Hood, known as Earl of
Huntington, and Locksley.
Dobson, R.B. and J. Taylor, eds., _Rymes of Robyn Hood : an
introduction to the English outlaw_ (Pittsburgh : University of
Pittsburgh Press, 1976).
Dobson, R. B. and John Taylor. _Rymes of Robyn Hood : an introduction
to the English outlaw_. Pittsburgh : University of Pittsburgh Press,
1976. Considered one of the best editions of poems and ballads devoted
to Robin Hood. Criticial commentary accompanies each poem.
Hunt, Leigh, _Ballads of Robin Hood_ (Cedar Rapids, Ia., Priv. print.
[The Torch Press] 1922). With some manuscript reproductions.
Jonson, Ben [1573?-1637], _Ben Jonson's Sad shepherd, with Waldron's
continuation_ (Ed. by W. W. Greg. Louvain, A. Uystpruyst; [etc., etc.]
Jonson, Ben, _The sad shepherd: or, A tale of Robin Hood, a fragment_
Lees, Jim, ed., _The ballads of Robin Hood_ (Illustrated by David
Gentleman, Cambridge : University Press, 1977).
Munday, Anthony, _The death of Robert, Earl of Huntingdon. (Oxford,
Printed for the Malone Society by V. Ridler at the University Press,
Munday, Anthony, The downfall of Robert, Earl of Huntingdon ([Prepared
by John C. Meagher]. Oxford, Printed for the Malone Society by V.
Ridler at the University Press,  1601).
Ritson, Joseph, ed., Robin Hood: A collection of all the Ancient
Poems, Songs, and Ballads, no extant, relative to that celebrated
English Outlaw; to which are prefixed Historical Anecdotes of his Time
(London, 1795, printed for T. Egerton, Whitehall, and J. Johnson, St
Paul-Church-Yard.) This book (originally published in two volumes) has
been reprinted many times; the latest is a facsimile reprint of the
1865 edition entitled Robin Hood: Ancient Poems, Song and Ballads (R.
Broomhead, Chesire, 1994; ISBN 0 9524003 0 8).
Ritson, Joseph, ed., Robin Hood : a collection of all the ancient
poems, songs, and ballads (London : Printed for Longman, etc., 1820).
Sidgwick, Frank, ed., Popular ballads of the olden time (London,
Sidgwick & Jackson, ltd., 1912). Ballads of Robin Hood and other
Tennyson, Baron Alfred, The foresters, Robin Hood and Maid Marian (New
York, Macmillan, 1892).