Since it was first published in 1965, David V. Erdman's edition has been widely hailed as easily the best available text of Blake's poetry and prose. Comparing it to the other Blake texts, Michael J. Tolley in Southern review observed that it has "very much fuller textual annotations; and incorporates a remarkable number of new readings, including an almost complete recovery of the suppressed or altered passages in Jerusalem and many new readings of hitherto dubious passages in the manuscript, including many in The Four Zoas."

F.W. Bateson, writing in The New York Review, pointed out that "the crucial preliminary problem [in establishing Blake's text] is simply to make out what Blake wrote - including, of course, what he wrote before he deleted the manuscript or erased the engraving (or the copper-plate script). Erdman has used modern aids such as infrared photography, microphotography, and a powerful magnifying glass to help his own sharp and experienced eyes, but his real achievement has been simply to look at the physical realities of Blake's text more closely and intelligently than any previous editor."

This newly revised edition includes the latest work on variants, deleted lines, arrangements of poems and dating, and eighty-two pages of critical commentary by Harold Bloom. The volume has been awarded the distinction of "An Approved Edition" by the Committee on Scholarly Editions of the Modern Language Association.