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Our knowledge of when each printer worked for Doi is limited, based primarily on a few published references, some interviews, and studying seals' appearances on prints. Shown here is a suggested timeline of Doi printers, formatted by Marc Kahn -- please send in your additions and corrections. If correct as shown, the dates above could be compared with the printer seal and the print date, as one tool in determining the 'state' of a print. This assumes that Doi permitted only the correct use of a printer's seal (on his own work). The validity of this assumption, for printers and for carvers, is discussed in the Case study, Doi Article #1, Doi Article #5, and elsewhere on this site. Collectors are encouraged to use all available methods to evaluate Doi print states, without an over-reliance on seals. Different collectors place emphasis on various characteristics: impression quality paper type registration accuracy watermarks other markings keyblock details printing and baren workmanship comparison with other states provenance The above timeline, while preliminary, is offered in the spirit of adding another tool to the serious collector's arsenal. Return to top