from https://wwwnet-dos.state.nj.us/DOS_ArchivesDBPortal/NJProprietors.aspx

Name    Descriptions and Location    Date    Reference

TO: William H. B. Thomas
FROM:
SURVEY AND MAP [AND COPY]. 14.21 acres. On Mulhockaway Creek which is a
branch of the Raritan River; Bethlehem Township; Hunterdon County. [Warrant
Date: 14 Aug 1867].
OTHERS NAMED: [Unrecorded] Opdyke (Owner of adjoining land); Jonathan Robbins
(Owner of adjoining land); H. C. Woolman (Deputy Surveyor) (Signatory)
LOCATIONS: West Jersey; Hunterdon; Bethlehem Township; Mulhockaway Creek;
Raritan River     11 Apr 1874    WJ Loose Records : 1874 - Thomas, William
H. B. (56400) (PWESJ004)

TO: Robert Farnsworth
FROM:
MORTGAGE. 55.5 acres. Bethlehem Township; Hunterdon County. Number 20. For
the sum of £17 Proclamation Money. Notation in margin: March 25th 1778
Principal and Interest on this Mortgage paid off.
OTHERS NAMED: Jesse Hart (Witness); Robert Imlay (Witness); Jonathan Robbins
(Owner of adjoining land); John Stevens, Jr. (Witness [Notation on verso])
LOCATIONS: West Jersey; Hunterdon; Bethlehem Township     25 Mar 1776
Hunterdon Co 1776 Mortgage Register (1) : Folio 20 (CHNLO001)