With the help of unknown typists, T. H. Howard-Hill produced a transcript of the Folio in the 1960s which is available at the Oxford Text Archive (OTA) (see T. H. Howard-Hill, 'The Oxford Old-Spelling Shakespeare Concordances', Studies in Bibliography, vol. 22 (1969), 143-64). The transcript is of high quality but it inevitably contains errors. This page gives a list of 379 such errors that I have noted. The list is unlikely to be exhaustive: it was computer-generated by comparing the Internet Shakespeare Editions (ISE) text against Howard-Hill's text and then manually checked against the Norton facsimile, so it will not show the errors they have in common. I have disregarded differences between the Howard-Hill and the ISE texts apparently due to differing editorial policies: the ISE aims to provide literal transcripts whereas Howard-Hill corrected 'obvious' errors and expanded abbreviations.

Howard-Hill's text was used to print the Oxford Old-Spelling Shakespeare Concordance books in the late 1960s and early 1970s. Some books were based on the Folio transcript and others on separate transcripts of the primary quartos which Howard-Hill also produced. The books based on the Folio transcript will be found to contain the errors below.

Two errors deserve special mention. One is the amusing Wherein our Sauiours Birch is celebrated at Hamlet, 158 (well, Jesus was a carpenter), proof that c/t errors still occur. The other is more serious. Several lines in the epilogue to 2H4 have been truncated; for example, the word Gentlewomen was lost from the end of the line a good Conscience, will make any possible satisfaction, and so will I. All the Gentlewomen. We can guess what went wrong. All the text of the Folio plays is printed in two columns, with just two exceptions: the prologue to Troilus and the epilogue to 2H4. The Troilus prologue is in verse so its line lengths were not affected by the decision to print it in one wide column. But the 2H4 epilogue is in prose. Because it is printed in a single column spanning the whole width of the Folio page, its line lengths are much longer than in any other play text in the book, even though it is printed in a larger font size. Its longest line is the one I just quoted, which is 90 characters long. At some point in the past Howard-Hill's text was probably output through a computer program with the incorrect assumption that each line would fit inside the standard width of an old-fashioned computer terminal, which is 80 characters. So all lines in Howard-Hill's text were truncated at 80 characters (including the extra tagging characters he had added). This made no difference to any line except a few in the 2H4 epilogue, which lost their last few characters.

Howard-Hill's text, obtained via the OTA, was also used as the basis of an excellent alternative online concordance to the Folio text, at the University of Chicago. That site incorrectly informs visitors that it is based on the Norton facsimile. It is demonstrably based on Howard-Hill's text because it reproduces his errors (at the time of writing in December 2014).