N.p. but likely Kingston unsigned but attributed to William Cockburn, circa. 1790-92. Pen, ink & watercolor on laid paper, 16 joined sheets backed on original linen with silk selvage, 48” x 57”. De-ascension notation in manuscript at lower left corner of map "D H S / Ex I-3 / C M S Sept 17 1908”. Widespread flaking and losses affecting map and text, old restorations, modern verso stabilization, reinforced with Japan paper, selvage mostly preserved, exhibits evidence of being repeatedly handled over the centuries, old folds toned and chipped, map and text still very discernable and readable, good or better overall. Two similar manuscript maps of the patent located in New York State archives, one by William Cockburn 1770 and one by John Kiersted 1810, both of which are significantly smaller. No equivalent example located or identified. Auction records subsequent to 1900 indicate no similar map offered or sold. An exceptional and unique rarity.
Orig 1749 survey bounds and locations of monuments according to Ebenezer Wooten depicted / Boundary lines and course of Rochester grant annotated as ‘Agreement line laid down by W. Cockburn in 1776’
Complete description forthcoming.