For references to woodcut initial letters see George Watson Cole's "An Index to Bibliographical Papers Published by the Bibliographical Society and the Library Association;" the Bibliographical Society's "Index to Selected Bibliographical Journals 1933-1970" (3 references only); and the two "Selective Check Lists of Bibliographical Scholarship" published by the Bibliographical Society of the University of Virginia for the years 1949-1955 and 1956-1962. I should think the cumulative index to the "Gutenberg Jahrbuch" would yield some references.
Good luck. Phil Weimerskirch, Smithfield, Rhode Island
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