Heisey Glass Company

The majority of the pieces are impressed with the company logo, a raised capital letter "H" inscribed in a diamond of approximately 1⁄4 inch (6.4 mm) in length.

Popular pattern names include Crystolite, Greek Key, Empress, Plantation, Ridgeleigh, Stanhope, Old Sandwich, and Yeoman, amongst dozens of others.

In 1974, the group founded the National Heisey Glass Museum, located in Veterans Park in downtown Newark, Ohio.

Other displays show the company's glass manufacturing process through molds, tools, etching plates, factory designs, and samples.

In addition to the exhibits, the museum features a media center, company archives (with many original molds), a library, and a gift shop.

The Heisey Collectors of America occasionally reproduces pieces from the original molds, for fundraising purposes, that are sold in the gift shop.

Heisey "Ivorina Verde" (greenish uranium milk glass ) souvenir cup from Hansboro , likely from the decade prior to World War I . [ 1 ]