Kamm, "The Civil War Career of Thomas A. Scott," 3-4 11-18.

Douglas E. Bowers, "Logrolling to Corruption: The Development of Lobbying in Pennsylvania, 1815-1861," Journal of the Early Republic 4 (Winter, 1983), 469-70.

Colleen A. Dunlavy, Politics and Industrialization: Early Railroads in the United States and Prussia (Princeton: Princeton University Press, 1994), 80. 138-39.

Scott never forgot the power of friendship.

Pamela Laird, Pull: Networking and Success Since Benjamin Franklin (Cambridge: Harvard University Press, 2006), 18-24, 29-36.