James T. Mullin and Sons, Inc. was a menswear clothing store in Wilmington, Delaware. The store was founded in 1862 by James T. Mullin (1836-1896) in West Chester, Pennsylvania, and later relocated to Wilmington in 1869. James T. Mullin and Sons, Inc. expanded its locations throughout Delaware throughout the late nineteenth and early twentieth centuries. The records consist of a scrapbook and a box of loose material laid-in and removed for preservation purposes. The materials document the business via advertisements, mailers, newspaper clippings, and some personal family items dating between 1911 and 1955.