Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 282
METALCONDENSATIONGUTTER ROLLED STEEL BAP PUTTYLESS SKYLIGHT CROSS SECTION … SKYLIGHT WITH ARIEL VENTILATORS ATTACHED. SKYLIGHTS—All curb and roof flashings shall be Included under heading of Sheet Metal Work. They mustbe well connected, ready to receive the skylight work, and must include all necessary counter flashing, well secured toroof flashings and made water-tight.…
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