Cox, Harold (2004). "Senate Members 'D'". Pennsylvania Election Statistics: 1682–2004. Wilkes University Election Statistics Project. Retrieved January 20, 2020.
Cox, Harold (2004). "Senate Members 'M'". Pennsylvania Election Statistics: 1682–2004. Wilkes University Election Statistics Project. Retrieved January 20, 2020.
Cox, Harold (2004). "Senate Members 'S'". Pennsylvania Election Statistics: 1682–2004. Wilkes University Election Statistics Project. Retrieved January 20, 2020.
Cox, Harold (2004). "Senate Members 'K'". Pennsylvania Election Statistics: 1682–2004. Wilkes University Election Statistics Project. Retrieved January 20, 2020.
Cox, Harold (2004). "Senate Members 'P'". Pennsylvania Election Statistics: 1682–2004. Wilkes University Election Statistics Project. Retrieved January 20, 2020.