NOTE TO MAP OF CONCORD 



The material used in this Map of Concord has been derived from a 

 variety of sources. The town bounds, streets, and residences have been 

 taken from a township map of Middlesex County made by H. F. Walling 

 in 1856, reference also being had to a local map of Concord by the same 

 engineer, dated 1852, on which credit for the surveys of White Pond and 

 Walden Pond is given to "H. D. Thoreau, Civ. Eng r ." The course of 

 the Concord River is drawn from an elaborate manuscript plan of Tho- 

 reau's, based on earlier surveys, showing the river from East Sudbury 

 to Billerica Dam. This plan, on which Thoreau has entered the results 

 of his investigation of the river in the summer of 1859, is now in the 

 Concord Public Library. The outlines of Walden and White Ponds 

 have also been taken from Thoreau's original surveys, now in the Con- 

 cord Library. Loring's and Bateman's Ponds are according to surveys 

 by Mr. Albert E. Wood of Concord, and Flint's Pond is from a survey 

 for the Concord Water Works by Mr. William Wheeler, also of Concord. 



All names of places are those used by Thoreau, no attention being 

 given to other names perhaps more current either in his own time or at 

 present. Only such names of residents are given as are mentioned in 

 the Journal. 



A few old wood roads, pasture lanes, etc. (Thoreau's preferred high- 

 ways), are indicated, as to their general direction, by dotted lines. 



The irregularity of the northeastern boundary of Concord arose from 

 the fact that when Carlisle was set off from Concord in 1780, the farmers 

 living on the border were given the option of remaining within the 

 bounds of Concord or of being included in the new town. In 1003 the 

 Massachusetts Legislature abolished this old division and continued 

 the straight line forming the western half of the boundary directly to 

 the river. 



The identification of localities which were named by Thoreau appar- 

 ently for his personal use alone has been accomplished, so far as it has 

 proceeded, by a careful study of all the Journal references to each local- 

 ity, an examination of a large number of Thoreau's manuscript surveys, 

 and an extended personal investigation on the ground. Many of these 

 localities are given more than one name in the Journal, and in a few 

 cases the same name is given to different localities. Where doubt exists 

 as to any particular location, the name is omitted from the map. 



Hon. F. B. Sanborn, Judge John S. Keyes, Dr. Edward W. Emerson, 

 the Misses Hosmer, and others among the older residents of Concord 

 have been consulted in the preparation of the map, and have kindly 

 supplied helpful information from their personal acquaintance with 

 Thoreau. 



H. W. Gleason. 



December, 190G. 



