McGill Library
McLennan Library Building3459 rue McTavish
Montreal, Quebec
H3A 0C9
Title and statement of responsibility area
Title proper
Letter, 20 March 1878
General material designation
Parallel title
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Title statements of responsibility
Title notes
- Source of title proper: Title based on content.
Level of description
Item
Repository
Reference code
CA MUA MG 1022-2-1-123-0025
Edition area
Edition statement
Edition statement of responsibility
Class of material specific details area
Statement of scale (cartographic)
Statement of projection (cartographic)
Statement of coordinates (cartographic)
Statement of scale (architectural)
Issuing jurisdiction and denomination (philatelic)
Dates of creation area
Date(s)
Physical description area
Physical description
Publisher's series area
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Archival description area
Name of creator
Administrative history
John R. Hart and James Hart, partners in the firm Hart Brothers, were in the business of mining and producing oil. They were the principal owners of the leaseholds of nine adjoining farms in Washington County, Pennsylvania. The other brothers, Guy Hart and Thomas Hart, were drilling oil wells contractors and, William C. Hart was a field superintendent. In the 1920s, 30s, and 40s, the patent applications were filed by William J. Hart, inventor from Hart Brothers & Co, regarding heating, cooling, insulating equipment for boreholes or wells, e.g. for use in permafrost zones.
Custodial history
Scope and content
Letter from Hart Bros. to John William Dawson, written from Montreal.
Notes area
Physical condition
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Standard number area
Standard number
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Place access points
Name access points
- Dawson, John William, Sir, 1820-1899 (Recipient)