I remember a while back, there was a discussion about sandstone quarrying and that some quarries had records of notable buildings that were constructed from their stone. I just attended a meeting of the Heritage Preservation Commission in Minneapolis tonight where the Sumner T. McKnight mansion on Park Avenue was nominated for a historic designation study. It is constructed out of Lake Superior sandstone. I couldn’t help but to wonder if there is any quarry records that correlate with this building. Would anyone know how to find the answer to that?