Indiana Glass had a resurgence in sales during the 1970s, and began marketing some of its tableware for the home through Lancaster Colony's Tiara Exclusives.

During the late 1880s, the discovery of natural gas started an economic boom period in East Central Indiana.

In 1896, the building was sold to George Beatty and James Brady, who started the Beatty-Brady Glass Company.

All complaints were related to anti-union activity, and the action was said to begin "a big fight between organized and nonunion labor, and will be watched with interest all over the country..."[13] Shortly afterwards, the matter was forwarded directly to Indiana's Supreme Court.

[17] The changes were made because the conglomerate had financial difficulties, and it sold or closed several of its glass plants to raise capital.

[18] On February 10, the 250 men employed at the Dunkirk plant went on strike over issues with National Glass Company.

[19] The issues between the National Glass Company and union employees were settled in two weeks, and work resumed.

[22] At the beginning of 1903, Frank W. Merry was sent by National Glass Company to Dunkirk to run the Beatty-Brady plant.

[25][Note 3] In 1907, National Glass Company defaulted on the interest payments for its bonds, and a bank brought suit for the foreclosure of mortgages that were used as security.

[29] During the year, Frank Merry and associates formed a company to buy the Dunkirk glass plant.

[Note 4] The major stockholders were Frank Merry, Henry J. Batsch, Harold H. Phillips, Charles W. Smalley, Rathburn Fuller, and James E.

[32] Natural gas was the original fuel used by glass factories in the Dunkirk area to heat their furnaces.

Dunkirk has a railroad line that crosses the town providing a transportation resource for coal and raw materials.

Sand from Illinois, soda ash from Detroit mills, and lime from northern Ohio were major raw materials brought to Dunkirk for glass making.

[39] By the early 1920s, the plant employed about 550 people when operating at capacity, and could produce three carloads per day of glass products.

[41] It had sample rooms for its products in major cities such as New York, Philadelphia, Boston, Baltimore, Chicago, St. Louis, St. Paul, and San Francisco.

[44] At the start of World War II, glass plants began making less glassware for the home and more for warfare such as lenses for aircraft, trucks, and naval vessels.

The acquisition enabled the company to use Sneath's recipe for heat resistant glass—bolstering their large assortment of glassware products.

At the time, Indiana Glass was a leader in barware, stemware, decorative crystal tableware, and novelties.

[43] Some of the more well-known Depression Glass patterns are Avocado, Indiana Custard, Pyramid, Sandwich, and Tea Room.

[58][Note 7] Indiana Custard is the collector name for Flower and Leaf Band ware that was made from the 1930s to the 1950s.

The pattern was used for coffee sets (bowl, cup and saucer, platter, sugar, creamer) using an opaque glass of custard color with decorated bands.

The Tea Room dinner sets were made in crystal, amber, green, and pink glass.

[71] Tiara Exclusives, a multi-level marketing company owned by Lancaster Colony, began on July 1, 1970.

Glassware made by the companies owned by Lancaster Colony (including Indiana Glass), was sold via home parties—similar to the way Tupperware is marketed.

Its Glass and Candles segment accounted for 27 percent of its net sales for the fiscal year ended June 30, 1994.

[76] By 2002, the Glassware and Candles segment for Lancaster Colony had declining revenue for three years in a row, and experienced some losses due to the bankruptcy filing of Kmart Corporation.

[11] Negotiations for a new labor agreement were still ongoing by mid-December, and several confrontations between workers and company guards happened during the strike.

[80] After the shutdown at the Dunkirk facility, production continued at the Sapulpa plant under the Indiana Glass name.

[81] In 2006, the activist hedge fund Barington Capital Group, L.P. began an effort to force Lancaster Colony to eliminate its glassmaking business.