Page proofs of the issue, in the form of typeset pages copied onto A4 sheets. These have been corrected (probably by Val Warner), with printing errors marked in red and other alterations in blue. Printing house personnel have added additional notes and instructions. Eric Homberger's essay, which was extensively revised at proof stage, was originally stored separately from this sequence. The extra revisions to his essay have been made in light blue pen. It may be that this was Homberger's own author's proof copy, which was then used as the basis for the collated proof of this essay, rather than having Homberger's changes transferred to another set.