U Upland Flint Glass Co. / L&Co / Upland Glass Co. / Other U UNION CO Union / United Glass Ltd. / UGP United Glass Products Co. / Other U UDCo United Drug Co. / United Glass Products Co. / Bottle Research Group / UG (in hexagon) United Glass Ltd. / U Underwood Glass Co. / Other U United Glass Products Co. / Union Glass Co. / Nuttal & Co. UMPIRE GLASS CO. / B. United Glass Bottle Manufacturers Ltd. / Knox Glass Bottle Co. / Maryland Glass Corp. / Date Range Section* U Upland Glass Co. / Section* UGPCO51 United Glass Products Co. / Umpire Glass Co. / Aetna Glass Co. / UGCo Union Glass Co. / Obear-Nester Glass Co. / Beaver Falls Glass Co. / UGP51 United Glass Products Co. / G. U.G. Glass Containers Ltd. / R United Bottle Mfg. / /
Organization
American Flint Glass Workers Union / A /
Person
Carol Serr / Pete Schulz / Bill Lockhart / Beau Schriever / Bill Lindsey / /
Manufacturer’s Marks and Other Logos on Glass Containers Compiled by the Bottle Research Group (Bill Lockhart, Bill Lindsey, Carol Serr, Pete Schulz, and Beau Schriever) U Logo