The Edge Moor Iron Company engaged in the manufacture of iron and steel bridges at a plant located on the Delaware River north of Wilmington. The collection is comprised of a limited selection of documents, primarily connected to the liquidation of the company in 1936. It includes plant and property maps, clippings, and deeds and titles covering the property.

Helen Sellers Garrett (1857-1946) was one of Wilmington's pioneer businesswomen and served as president of the Labor Commission of Delaware. She was the daughter of one of the Edge Moor Iron Company's founders and granddaughter of abolitionist Thomas Garrett (1789-1871). The collection contains a carbon typescript report of the lawsuit of Helen S. Garrett vs. Edge Moor Iron Company, including financial statements.