Keywords: Grumblethorpe Front.JPG en Grumblethorpe as restored The family home of the Wisters On the NRHP since March 16 1972 At 5267 Germantown Avenue Germantown Philadelphia Next door to the Grumblethorpe tennant house which is also on the NRHP Own Smallbones 2010-03-24 40 1 55 5 N 75 10 6 5 W Grumblethorpe |