Note 341 — Chapter IX · ToC
Reading edition
John Wentworth, in his Congressional Reminiscences, hints at some vote-getting in the East by tariff concessions; but Douglas insisted that it was the Chicago branch, promising to connect with Eastern roads, which won votes in New York, Pennsylvania and New England. See Illinois State Register, March 13, 1851. The subject is discussed by Sanborn, Congressional Grants, pp. 35-36.