I was going to publish here an article I wrote about the Headquarters mill that first appeared on The Delaware Township Post in 2006. But like many writers, I can never leave well enough alone. Since Samuel Green figures in the history of the village of Headquarters, if not the mill itself, it seems appropriate to focus on the earliest history of the mill.
Opdycke
OPDYCKE. Also Opdyke or Updyke. The first of this family in Hunterdon was John Opdycke (1710-1777) and his wife Margaret Green (1711-1775), daughter of Samuel Green. For a time, they owned much of the land around Headquarters, as well as the farm where the covered bridge now stands. Their children and descendants became prominent in Hunterdon history.