C. 1879 Large Canvas Backed Surveyor's Map of Plymouth MA with Hand-written Annotations

A special thing for a resident of Plymouth, MA, or for a lover of singular maps, too. This 3+ foot long canvas backed annotated map of Plymouth village and environs must have been stored for many years rolled up with a print that left a ghostly toned photographic image on it in the negative (buildings, trees, figures), imparting an especially intense sense of place and history.  (With some research I've learned that 2/3 of this map was published in 1879 by Geo. H. Walker & Co. Boston, 61 Hanover St. Boston Mass, with an image of prominent Plymouth residences on reverse, which seems to be the image here--but it is not bleeding through here, rather a copy of that print must have been laid facing it.) So---the right 2/3 of the map appears to have been published in Walker & Co's Atlas of lPlymouth County Mass in 1879, and maybe the left third too, added to this one when backed with canvas, perhaps. It is mostly that section that features hand-written notes in red and black and grap