The Mesker Brothers Iron Works and George L. Mesker & Co. were competing manufacturers and designers of ornamental sheet-metal facades and cast iron storefront components from the 1880s through the mid-twentieth century. The Mesker Brothers Iron Works was based in St. Louis, Missouri, and was operated by brothers Bernard and Frank Mesker. The George L. Mesker Company was operated by a third brother, George L. Mesker, and was based in Evansville, Indiana. The Mesker brothers were the sons of John Mesker who operated a stove business in Evansville and later galvanized iron for buildings. The three brothers learned their iron-working skills from their father.