In 1900, John Ernest Miller, the company's long-time designer, became a full shareholder along with members of the Duncan family.

[1] After the fire, son-in-law Augustus Heisey left the company to begin his own glass manufacturing operation in Newark, Ohio.

[1] James E. Duncan built a new factory on Jefferson Avenue in Washington, Pennsylvania, where access to railroads was convenient, and the natural gas which was needed to power the furnaces was inexpensive.

[1] The remaining inventory was sold at greatly reduced prices, causing glass collectors to travel hundreds of miles to purchase the final pieces.

[1] The molds and equipment were sold to the US Glass Company, where their Duncan Division in Tiffin, Ohio continued to produce Duncan-ware pieces.

[2] The glass making processes and technologies at Duncan & Miller did not significantly differ from contemporary glassmakers in Western Pennsylvania and neighboring Ohio and West Virginia.

[1] Some of the most popular styles were produced during the 1920s through the 1940s, including the Canterbury, Caribbean, Hobnail, Nautical, Sandwich, Spiral Flutes and Teardrop.

[4] On July 8, 1993, the society opened a stand-alone museum in an old building on Jefferson Avenue, near the original location of the Duncan glass plant.

[5] Its design is archetypical Queen Anne Victorian style, with ornate "gingerbread" details, stained and beveled glass, recessed doors and windows, and louvered wooden shutters.