- Holland’s Hancock Directory (1887), 94.
- "Hancock is visited by grim reaper," Daily Mining Gazette, 2 September 1906. "Byron Pierce is Dead," Copper Country Evening News, 1 September 1906.
- Alexander, East Hancock Revisited, 40.
- Polk’s Directory (1895-96), 243.
- "Hancock is visited by grim reaper," Daily Mining Gazette, 2 September 1906. "Byron Pierce is Dead," Copper Country Evening News, 1 September 1906.
- Donald A. Durfee, “The History and Description of the Northwestern Hotel Building,” term paper, 1995.
- Hancock Historic Preservation Committee, “Hancock, Michigan: a Walking Tour” (1995).
- Union Building Association of Calumet, Records of Meetings, Keweenaw National Historical Park.
- “Hancock is Visited by Grim Reaper,” Daily Mining Gazette, 2 September 1906.
- “New Building Nearly Finished,” Daily Mining Gazette, 28 November 1906.
- “New Building Nearly Finished,” Daily Mining Gazette, 28 November 1906. 1900 and 1910 censuses. Polk Directories.
- 1920 census. 1930 and 1939 Polk Directories.
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