Notes from Penn's Acres.Published in:Pomona, 2010, v. 43, n. 2, p. 9By:Kuehn, J. A.Publication type:Article
February 2, 1886: The First Groundhog Day in Punxsutawney, Pennsylvania.Published in:Weatherwise, 2008, v. 61, n. 1, p. 16, doi. 10.3200/WEWI.61.1.16-17By:Potter, SeanPublication type:Article