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1.This account is reproduced, with only minor modifications, from the ‘Historical Introduction’ to the OED published in 1933.

^{2. The Editor’s own account of this project may be read in the prefatory sections of the four volumes of the Supplement, especially the Introduction to Volume I (A-G), on which the present narrative has drawn.}

^{3. Supplement, Volume II, p. vii..}

^{4.  The feasibility of using an optical scanner to convert the text of the Dictionary into machine-readable form was also investigated by OUP at this point, as also by others later. It was generally agreed that the complexity of the structure and the irregularity of the type would require an excessively large amount of editorial intervention in the scanning process; and it was not clear how an adequate framework of structural mark-up could be introduced into the text alongside this method of data conversion.}
 

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