Book: Volk, Joyce Geary. 2006 The Warner House: A Rich and Colorful History.
• Excavated shards of 18th century English opaque twist, baluster, and knop stems from Warner House, Portsmouth, NH: Fig 7.12, p. 85Book: McNally, Paul. 1982 Table Glass in Canada, 1700- 1850.
• Similar profile wineglass with (differently detailed) white twist stem and floral engraving on bowl, excavated in Canada: p. 71, fig. 43, excavated at the Fortress of Louisbourg (Nova Scotia). Glass dates before 1768.