Joseph Bancroft & Sons Company manufactured, bleached, dyed, and finished a variety cotton-made goods. In July of 1958, The Spunize Company of America filed a lawsuit against one of Bancroft's licensees, the Duplan Corporation. The Spunize Company alleged that Duplan Corp. had committed patent infringement of a yarn crimping process that Duplan licensed from Bancroft. This collection consists of photographs and motion picture film depicting the yarn crimping process and the crimped yarn. A majority of the materials were created with the intention of being submitted as evidence in the court case.