Letter dated January 28, 1887 from Major of Engineers Charles J. Allen to General James C. Duane suggesting shortening the draw of pontoon bridge from 330 to 200 feet.
Letter dated April 3, 1924 from Stillwater Mayor R. J. Coffeen to C. M. Babcock, Commissioner of Highways regarding ownership of the bridge, Chapter 323 of laws of 1921 and the role of the state highway commission.
Letter dated January 5, 1925 from M. W. Torkelson, Wisconsin Highway Commissioner to Stillwater City AttorneyEdwin D. Buffington regarding St. Croix County's as opposed to the sate of Wisconsin's responsibility for maintaining a new bridge.
Letter dated March 12, 1925 from W. J. Madden, Stillwater Association of Public and Business Affairs to Asa G. Briggs, St. Paul Association of Public and Business Affairs suggesting that the City of St. Paul should share in the expense of a new bridge at Stillwater since many of the people crossing the bridge are travelling to and from St. Paul.
Congressional Act H. R. 13502, dated January 8, 1929 authorizing the State of Minnesota and the State of Wisconsin to construct, maintain and operate a free highway bridge across the Saint Croix river at or near Stillwater, Minnesota.