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Melbourne Slate Company

By Melbourne Slate Company.,Melbourne Slate Company

Roofing slate, as a source of wealth to Canada

By Bell, Robert

The Utica slate formation

By Henry Marc Ami

Prospectus of the Douglas Slate Quarry, &c. of the province of Nova Scotia

By Douglas Slate Quarrying Company of Nova Scotia

Prospectus of the Sherbrooke Slate Company, (Limited)

By Sherbrooke Slate Company

Répertoire numérique du fonds 234 J

By Archives départementales de la Mayenne.

Newfoundland's slate quarries

By Newfoundland Slate Quarries