Wolf v. Spencer , 282 Pa. 425 ( 1925 )
Whitman v. Stipp , 270 Pa. 401 ( 1921 )
Ely v. Pittsburgh, Cincinnati, Chicago & St. Louis Railway , 158 Pa. 233 ( 1893 )
Smathers v. Pittsburg & Butler Street Railway Co. , 226 Pa. 212 ( 1910 )