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Fonds consists of material created, collected, and utilized by Mr. Hank DeGraauw in his role as a Northern Electric / Northern Telecom / Bell-Northern Research Limited employee. Included are: technical manuals & bulletins; product handbooks; company newsletters; patents issued to Mr. DeGraauw; 2009 financial statements for Nortel (related to it seeking bankruptcy protection); photographs and slides documenting various technical drawings and components of the crossbar and digital phone switching systems; VHS recordings of company conferences and management updates to employees; and a published history of the Bell Telephone corporation.