NORTHWOOD GLASS CO. ADS, CATALOGS, AND INFORMATION by Northwood Glass Company (Martins Ferry-OH/Elwood City-PA, Co. Operated: 1888-96), Various Dates of Introduction
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Shape: Extra Information
Contributor: James Measell - Sanborn map

Shape: Trademarks, Markings, Labels
Contributor: Bill Banks this mark bears "considerable resemblance to H. Northwood's handwriting"-- J Measell

Shape: Extra Information
Contributor: James Measell - The railroad trestle was built after sometime in 1890, so the photo of the factory likely dates from 1891-1892. The tall stack is the typical structure above a multi-pot furnace.