[1] About 1904 Dugan along with his partner W. G. Minnemayer bought the closed Northwood factory in Indiana, PA and opened it as the Dugan glass company.
[3] The company continued production until a fire destroyed the plant on June 27, 1931.
[3] Dugan is best known for peach opalescent, a type of Carnival glass.
[3] They produced the most peach opalescent of any of the carnival glass manufacturers.
[4] They also produced deep shades of amethyst glass, some so dark they appeared black.