Interior of one of the Horse Shoe Forestry Company’s four sugarhouses. Five men tending the patent evaporator pans developed by John Rivet and James Hill and financed by Abbot Augustus Low.  Sap enters each evaporator from the large pipe on right controlled by a float mechanism on side of each evaporator. Operations of the Horseshoe Forestry Company. Photograph by George W. Baldwin. 1901. Piercefield, NY. Courtesy of the Adirondack Experience.