Sudbury Valley Trustees is a charitable corporation protecting the natural resources of the Sudbury River Valley since 1953. The maps show the Sudbury Valley Trustees' properties that are most suitable for walking or cross-country skiing. It provides the location, it relatives size and its most used trails. The sources for the map come from town atlases, assessors sheets, the United States Geodetic Survey quadrangle maps, aerial photographs, and people familiar with the area. Horseback riding are allowed on the indicated bridle trails. Individual maps also provide specific description for that particular area/walks. Photographs of each area are shown. Individual locations highlighted are: Wayside Inn Road, Framingham -- Brues Woods, Sudbury -- Walkup Memorial, Westborough -- Upper Mill Brook, Wayland -- Gray Reservation, Sudbury -- School House Pond, Wayland -- Welch Reservation, Framingham -- Fay Reservation/Round Hill, Sudbury -- Hamlen Woods, Wayland. On the reverse side, a large map covers portions of the towns of Westborough, Southborough, Marlborough, Ashland, Framingham, Sudbury, Maynard, Stow, Acton, Concord, Lincoln, Wayland, and Natick. It also includes an index of properties owned Concord, Sudbury, Wayland, Framingham, and Westborough. Great Meadow National Wildlife Refuge properties are also highlighted.