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