Picture postcards Caption on back of card: 'Old Main,' Knox College, was built in 1857. On October 7, 1858 the famous Lincoln-Douglas debates on the slavery issue took place a the east end of this bui…

Picture postcards Caption on back of card: East side of building as shown, was scene of historic Lincoln-Douglas debate on slavery issue, October 7, 1858, before 20,000 people. Color postcard. Ektachr…