The Schenectady County Historical Society, located in Schenectady, New York, was established on July 14, 1905, under the Membership Corporation Laws of the State of New York.
 The Society is an independent not-for-profit corporation, not a unit of government.
 Its stated mission as embodied in its constitution was, and remains, “to promote and encourage original historical research; to disseminate a greater knowledge of the history of the State of New York and particularly of Schenectady County; to gather, preserve, display, and make available for study artifacts, books, manuscripts, papers, photographs and other records and materials relating to the early and current history of Schenectady County, New York and of the surrounding area; to encourage the suitable marking of places of historic interest; to acquire by purchase, gifts, devise, or otherwise the title to or the custody and control of historic sites and structures.”
The Mabee Farm Historic Site, part of the Schenectady County Historical Society, is the oldest house still standing in the Mohawk Valley.
 It is located in the town of Rotterdam, New York, in the hamlet of Rotterdam Junction, New York, along New York State Highway 5S, about six miles (10 km) west of the city of Schenectady.
Schmucker Hall is an American Civil War site listed on the National Register of Historic Places in Adams County, Pennsylvania, that was constructed as the original Gettysburg Theological Seminary building.
 Used as both a Union and Confederate hospital during the 1863 Battle of Gettysburg, the facility served as the seminary's main building from 1832 to 1895, then as a dedicated dormitory for students until 1951.
 In 1960, it was leased by the Adams County Historical Society.
 Beginning in 2006, the Historical Society, along with the Seminary Seminary Ridge Historic Preservation Foundation, rehabilitated the building for adaptive reuse as the Seminary Ridge Museum www.seminaryridgemuseum.org .
 The Adams County Historical Society moved into the nearby Wolf House on the seminary campus preceding the renovation.
 In 2013, on the 150th anniversary of the battle, the Seminary, the Adams County Historical Society and the Seminary Ridge Historic Preservation Foundation opened the building as the Seminary Ridge Museum.
 The Museum houses displays about many different aspects of the battle, the seminary, the town, and the civil war, and the struggle among faith groups over slavery, as well as offering tours of the cupola.
 The exhibit and museum have earned international, national and regional awards and the rehabilitation achieved LEED Certification in 2013.
The Cockayne Farm Preservation Project is an undertaking by the Glen Dale, West Virginia city government and the Marshall County Historical Society.
 The centerpiece of the project, The Bennett Cockayne House, a property on the National Register of Historic Places, was given to the city in the will of Samuel Cockayne in 2001.
 A committee was formed by the city for preservation of the property, which led to the property being listed on the National Register and in finalizing a lease agreement with the Marshall County Historical Society.
The 1881 Courthouse Museum is an American historical museum located in Custer, South Dakota.
 The museum is housed in the original Custer County Courthouse which served as a center for government in Custer County and the Dakota Territory from 1881 to 1973.
 In November 1972, the 3-story red-brick courthouse was designated a historic site by the U.S Department of Interior.
 Following completion of a new courthouse located across the street, the original building was given to the Custer County Historical Society in 1973.
 The 1881 Custer County Courthouse museum was opened on September 6, 1976, by the Custer Country Historical Society.
 The museum houses exhibits about the Lakota Native American culture, the 1874 expedition of George Custer, and the lives of Victorian-era settlers in the Black Hills and Dakota Territory.
Greene Hills Farm, also known as the Greene County Historical Society Museum, is a historic home located at Franklin Township in Greene County, Pennsylvania.
 The house was built in 1861, as a 2 ⁄ -story, nine-bay by four-bay, brick dwelling with a gable roof in the Georgian style.
 It was expanded in the 1880s with a 2 ⁄ -story, brick addition with a gable roof.
 Another 2 ⁄ -story addition was built about 1900.
 It was the county home for the aged from the 1880s through 1964, when it closed its doors.
 It was renovated starting in 1969, to house the Greene County Historical Society museum collection and library.
Wing-Northup House, also known as the Washington County Historical Society Headquarters, is a historic home located at Fort Edward in Washington County, New York.
 It was built about 1815 by entrepreneur Daniel Wood Wing and is a two-story, five-bay, center entrance brick front building, with a two-story brick ell.
 A one-story brick side wing was added about 1880.
 The property was acquired in 1884 by James M. Northup, and in 1982 by the Washington County Historical Society.
The General William Grose House is a historic home located at 614 S. 14th St., New Castle, Henry County, Indiana.
 It is the home of the Henry County Historical Society.
 The Italianate mansion was built in 1870 by Civil War Major General William Grose and his wife Rebecca.
 General Grose commanded the 36th Indiana Regiment and fought in the battles at Vicksburg, Chattanooga, Chickmauga and Atlanta.
 He resided in the house until his death in 1900.
 The Henry County Historical Society acquired the 16 room mansion in 1902 and operates it as a museum.
The Rensselaer County Historical Society (RCHS) is a non-profit, historical society and museum, to promote the study of the history of the Rensselaer County, NY.
 RCHS was founded in 1927, and originally operated out of a single room in the Troy Public Library, collecting manuscripts and published materials related to the county's history.
 It is located in the Central Troy Historic District, in Troy, NY.
 The Rensselaer County Historical Society operates a museum, and offers public programs from its location at 57 Second Street, Troy, NY.
Herkimer County Historical Society is located in the 1884 Suiter Building, a historic home in Herkimer, Herkimer County, New York.
 It is a 2 ⁄ -story, wood frame structure with red pressed brick walls laid in black mortar built in 1884.
 It features a complex pitched roof of slate with a brick corbelled cornice and terra cotta ornament along the roof edge.
 There is also an octagonal peaked roof above the corner tower.
 Built originally as a private home, it was unfinished at the time of its builders death in 1925 and given to the Herkimer County Historical Society who occupied it in 1935.

Question: The Schenectady County Historical Society, located in Schenectady, is an independent non-for-profit corporation that operates the Mabee Farm Historic Site, located in what town in New York?
Answer: Rotterdam