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The Hagley Digital Archives provides online access to selected items from the Hagley Library's collection of images, documents, and publications related to the history of business, technology, and society.
Bert J. Lewen to Lawrence Katzman
Letter concerning the patent application for the evaporative humidifier. Also contains handwritten memo from Lawrence Katzman to Marc Harrison at end of typed letter.
Harrison, Marc, 1936-1998
Lewen, Bert J.
Household appliancesHumidifiersDesign protection
Manuscripts and Archives Department, Hagley Museum and Library
Marc Harrison papers (Accession 2193)
Series I, Subseries B, Box 4
[Description and dates], Hagley ID, Box/folder number, Marc Harrison papers (Accession 2193), Manuscripts and Archives Department, Hagley Museum and Library, Wilmington, DE 19807
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