I just noticed that the historic Derr House on tract "Dearbought" is presently up for sale. Was surprised to see this. It seems it has been up for sale for some time. If anyone is curious to see this old historic house, now being encroached upon by the development, a few photos of the (now remodeled) house can currently be viewed at http://www.trulia.com/property/40333575-1822-N-Greenleese-Dr-Frederick-MD-21701 -- www.MidMdRoots.com