This is a Vintage Postcard: Library Building, Sycamore, Illinois, made by Tribune Print, Sycamore. The postcard measures: 5.5” wide x 3.5” tall. This postcard is Unused, and in Good Condition (has some discoloration on the back).
I am not a postcard expert, this postcard was in a scrapbook designed to hold postcards and you can tell where the corners were placed under the tabs. A couple of the corners are creased.