Hendrickson, William Henry (1813–1899), real estate surveys of the farm (1899 and 1855 as retraced in 1939), panoramic photograph of the farm (circa 1890), original steel plate of a portrait engraving that appeared in Franklin Ellis, History of Monmouth County, New Jersey (Philadelphia: R. T. Peck & Co., 1885) following page 840; abstract of 1893 will and 1898 codicil; and miscellaneous documents (1833–1899), 1833–1899

William Henry Hendrickson inherited the ancestral farm in Holmdel from his grandfather Hendrick in 1840. He greatly remodeled the house about 1850 in a Gothic Revival style. The panoramic photograph of the farm, circa 1890, shows it in its heyday. Not a trace remains today. The real estate survey of 1855 indicates the extent of the outbuildings and barns as they existed at that time. In his will, Hendrickson divided the farm between two sons – William Henry received the northern portion of the property, while James P. inherited the south portion including the ancestral homestead and its contents. For a biographical sketch of Hendrickson, who served three terms in the New Jersey State Senate, see Franklin Ellis, History of Monmouth County, New Jersey (Philadelphia: R. T. Peck & Co., 1885), 840.