Letters from Edwin Hulbert to Frederick Mackenzie. Hulbert defends his management choices regarding the early operation of the Calumet & Hecla Mine, or describes his impressions of subsequent company executives. In one letter (Box 2, Folder 14), Hulbert describes an experience in which he felt the presence of a deceased sister in his life.

Correspondence addressed to Frederick MacKenzie.

Items found in this subseries includes copies of correspondence from Frederick MacKenzie to Edwin Hulbert.

This collection is comprised primarily of correspondence from Edwin Hulbert to Frederick Mackenzie dating from 1868 to 1913. It contains only a few copies of Mackenzie's letters to Hulbert, and a few pieces of miscellaneous correspondence from other writers. Also included in this collection are some financial records and receipts, an unidentified photograph, and a small assemblage of marbled end papers.