Copy B is not a complete copy but contains only the first chapter, To The Public. When the Blake Trust published a later edition in 1973 of the Trianon Press' 1950 facsimile edition of Blake's Jerusalem, images from Copy B were added along with facsimiles of proofs of four prints from Jerusalem. The limited run of these books makes them rare today. From WORLDCAT you may learn where they may be seen - primarily in university libraries. Advertisements by dealers for the sale of copies of these books occasionally display images which are not available to the public elsewhere.
Although the Blake Archive does not supply images from Copy B, it offers information on the provenance because Copy B was for a time bound with copies of America and Europe. The first owner would have been Thomas Griffiths Wainewright with whom Blake was acquainted. The present owner is Lord Cunliffe in whose family the book has been since the middle of the 19th century.
Compare images from the Frontispiece of several copies of Jerusalem.
Plate 47 of Jerusalem as it appears in available images:
Copy A in the British Museum
Copy B in the collection of Lord Cunliffe (said to be 25 plates, some colored)
Copy C in unidentified private collection
Copy D in Houghton Library of Harvard University
Copy E in Yale Center for British Art
Copy F in Morgan Library and Museum
Copy G untraced
Copies H, I and J are posthumous copies (Copy I is in the Library of Congress)
Letters, (E 728)
[To] Mr Butts, Grt Marlborough Street Felpham April 25: 1803 My Dear Sir ... But none can know the Spiritual Acts of my three years Slumber on the banks of the Ocean unless he has seen them in the Spirit or unless he should read My long Poem descriptive of those Acts for I have in these three years composed an immense number of verses on One Grand Theme Similar to Homers Iliad or Miltons Paradise Lost the Person & Machinery intirely new to the Inhabitants of Earth (some of the Persons Excepted) I have written this Poem from immediate Dictation twelve or sometimes twenty or thirty lines at a time without Premeditation & even against my Will. the Time it has taken in writing was thus renderd Non Existent. & an immense Poem Exists which seems to be the Labour of a long Life all producd without Labour or Study. I mention this to shew you what I think the Grand Reason of my being brought down here" Letters, (E 729) [To Thomas Butts] "Felpham July 6. 1803 ... Thus I hope that all our three years trouble Ends in Good Luck at last & shall be forgot by my affections & only rememberd by my Understanding to be a Memento in time to come & to speak to future generations by a Sublime Allegory which is now perfectly completed into a Grand Poem. I may praise it since I dare not pretend to be any other than the Secretary the Authors are in Eternity I consider it as the Grandest Poem that This World Contains. Allegory addressd to the Intellectual powers while it is altogether hidden from the Corporeal Understanding is My Definition of the Most Sublime Poetry. it is also somewhat in the same manner defind by Plato. This Poem shall by Divine Assistance be progressively Printed & Ornamented with Prints & given to the Public--But of this work I take care to say little to Mr H. since he is as much averse to my poetry as he is to a Chapter in the Bible He knows that I have writ it for I have shewn it to him & he had read Part by his own desire & has lookd with sufficient contempt to enhance my opinion of it. But I do not wish to irritate by seeming too obstinate in Poetic pursuits But if all the World should set their faces against This. I have Orders to set my face like a flint. Ezekiel iii C 9 v. against their faces & my forehead against their foreheads" Letters, (E 783) "[To] George Cumberland Esqre, Culver Street, Bristol N 3 Fountain Court Strand 12 April 1827 Dear Cumberland ... "You are desirous I know to dispose of some of my Works & to make them Pleasing, I am obliged to you & to all who do so But having none remaining of all that I had Printed I cannot Print more Except at a great loss for at the time I printed those things I had a whole House to range in now I am shut up in a Corner therefore am forced to ask a Price for them that I scarce expect to get from a Stranger. I am now Printing a Set of the Songs of Innocence & Experience for a Friend at Ten Guineas which I cannot do under Six Months consistent with my other Work, so that I have little hope of doing any more of such things. the Last Work I produced is a Poem Entitled Jerusalem the Emanation of the Giant Albion, but find that to Print it will Cost my Time the amount of Twenty Guineas One I have Finishd It contains 100 Plates but it is not likely that I shall get a Customer for it As you wish me to send you a list with the Prices of these things they are as follows L s d America 6. 6. 0 Europe 6. 6. 0 Visions &c 5. 5. 0 Thel 3. 3. 0 Songs of Inn. & Exp. 10. 10. 0 Urizen 6. 6. 0 The Little Card I will do as soon as Possible but when you Consider that I have been reduced to a Skeleton from which I am slowly recovering you will I hope have Patience with me. Flaxman is Gone & we must All soon follow every one to his Own Eternal House Leaving the Delusive Goddess Nature & her Laws to get into Freedom from all Law of the Members into The Mind in which every one is King & Priest in his own House God Send it so on Earth as it is in Heaven I am Dear Sir Yours Affectionately WILLIAM BLAKE"