1911 plans for the Hampden Railroad, original scale 1 inch equals 200 feet. Only the eastern mainline and the southern branch were actually built (though never opened); the western section of the mainline was never built. The plans were digitized by the Hampden County Registrar of Deeds in 1998; they were stitched together by R. P. McCormick in 2011.
Durkee, White, and Towne, engineers
Scanned version on <a rel="nofollow" class="external text" href="http://www.gigapan.com/gigapans/89569/">Gigapan</a>