Number of slates in each square
By: as manufactured by the Old Bangor Slate Company
Publisher: Old Bangor Slate Company
Published: 1893
Place of publication: Bethlehem, Pa
Language: eng
Subjects: Catalogs; Slate roofing; Slate; Roofing; Equipment and supplies; Old Bangor Slate Company
Other titles: To the roofing slate trade
Notes: Title from caption, page [3]

Includes specifications