Any library building that is older than fifty years is considered to be historic. Some historic library buildings continue to serve as libraries usually with additions. Others are razed so the lot they stand on can be used for a new library or for another use. Still others survive as buildings but are used for other purposes. One of the more positive alternative purposes for these buildings is to serve as a local history museum. Historical societies realize the importance of preserving historic buildings and they make them accessible to the public. There are several of these in Wisconsin. The Carnegie library building in Darlington which is pictured on the envelope above now serves as the home of the Lafayette County Historical Society Museum. The Antigo Carnegie library building shown on the postcard below serves as the home to the Langlade Historical Society. Other historic library buildings occupied by museums that I am aware of include those in Beaver Dam, Racine, Waupaca, Waupun, and Wisconsin Rapids. A down side to these buildings is that they are often not fully accessible to those with disabilities.