to Sellers, the Erie's own management didn't feel it in their best interests to pursue construction, so Brandt approached Baldwin Locomotive Works and Norris with the design. Baldwin was similarly uninterested, but Norris liked the idea. James Millholland of the Reading also saw the design and ordered one from Norris for the Reading. However, Sellers may have misinterpreted some of the information since Millholland did not work for the Reading until 1848, a year after the locomotive was built. Furthermore, Sellers refers to the first to be constructed as the Susquehanna, which was the Erie railroad's first , not the Reading's. The attribution to Septimus Norris stems from a patent, allegedly filed in 1846, that many sources cite for this locomotive type. However, such a patent has not yet been found in searches at the United States Patent and Trademark Office (USPTO). Septimus Norris did file a patent in 1854 for running gears, and the patent application showed a wheel arrangement in the drawing. Norris' wording in the 1854 patent was vague with regard to the wheel arrangement and the filing did not specifically claim invention of the configuration. A few days after William Norris completed the Chesapeake, Hinkley Locomotive Works completed their first locomotive, the New Hampshire, for the Boston and Maine Railroad. The first from Rogers Locomotive and Machine Works was the already-mentioned Susquehanna for the Erie Railroad. Baldwin's first locomotive did not appear until 1852. Through the 1860s and into the 1870s, demand for locomotives of the wheel arrangement grew as more railroad executives switched from purchasing a single, general-purpose type of locomotive such as the 4-4-0 American at that time, to purchasing locomotives designed for a specific purpose. Both the Pennsylvania Railroad (PRR) and the Baltimore and Ohio Railroad (B&O) were early adopters of the , using them for fast freight as well as heavy passenger trains. There were also two 3 ft narrow gauge 4-6-0 steam locomotives, No. 72 (No. 274) and No. 73 (No. 275), built by the Baldwin Locomotive Works in May 1925 for the United Railways of Yucatán in Mexico, where they were retired in the 1960s and were eventually purchased by Disney imagineers Roger E. Broggie and Earl Vilmer for $8,000 each to operate on the Walt Disney World Railroad circling around the Magic Kingdom at Walt Disney World in Bay Lake, Florida. No. 274 became No. 1 Walter E. Disney