1-20 AD Certificate of sale by GR to Solomon Sibley for a parcel of land. Typed copy. 30 November 1817, 2018; Certificate of transfer of streets and adjacent land as stated therein from GR to the Territory of Michigan for use as public thoroughfares. Typed copy 30 December 1817, 2018; Appointment of GR to Professorship of intellectual sciences at the University of Michigania. 17 September 1817, 2019; Appointment of GR to professorship of mathematics at the University of Michigania. 17 September 1817, 2019; Appointment of GR to professorship of astronomy at the University of Michigania. 17 September 1817, 2019; Unidentified church layout, 2019, 2018