Correspondence, photographs, journals, clippings, etc. relating to the Porter family of Skaneateles and Lockport, New York, primarily Stanley Porter and Benjamin H. Porter, who served in the Union Navy during the American Civil War. Other family members represented include his parents, James and Sarah, and his siblings Seth and Laura. At one time known as the Mensing-Braun Collection of Civil War Material.

Correspondence, writings, memorabilia pertaining to the American Civil War.