Undated manuscript note book, c.1850's, ahrd cover with marbled boards 15cm x 18cm, tan cloth spine, inside front cover pasted down is a blue printed paper titled 'Specification for Laying Track on the Peoria and Oquawka Railroad', the first 59 pages contain mainly engineering and surveying notes with some charts, tables and corrections, specific projects are mentioned including Connecticut and Passumpic Rivers Railroad which started in 1840, a private railroad for E. B. Kellog. The Connecticut and Passumpsic Rivers Railroad, commonly known as the Connecticut and Passumpsic, is a vital transportation artery spanning across the picturesque landscape of Vermont. Stretching from White River Junction to the Vermont-Canada border at Beebe Junction, Province of Quebec, Canada, this single-track standard-gauge steam railroad covers a distance of 109.605 miles. In addition to its mainline, the Connecticut and Passumpsic also maintains ownership of 52.006 miles of yard tracks and sidings, resulting in a comprehensive network totaling 161.611 miles of all tracks. Notably, the Connecticut and Passumpsic holds a leasehold interest in the assets of the Massawippi Valley Railway Company, further expanding its operational footprint. The Massawippi Valley Railway, although not included in this report, spans approximately 31.95 miles from Beebe Junction to Lennoxville, Province of Quebec, Canada. Additionally, a branch line extends from Beebe Junction to Stanstead, Province of Quebec, covering a distance of around 3.51 miles. The Connecticut and Passumpsic effectively manages and operates both its owned and leased properties through a leasing arrangement with the Boston and Lowell. This strategic collaboration ensures seamless connectivity and efficient transportation services along the entirety of its route. As a vital link in the region's transportation infrastructure, the Connecticut and Passumpsic Rivers Railroad plays a crucial role in facilitating trade, commerce, and connectivity between Vermont and Canada. With its extensive network and commitment to operational excellence, the Connecticut and Passumpsic continues to serve as a lifeline for communities and industries reliant on reliable rail transportation in the Northeastern United States and beyond.