How many 1858 houses still exist i n  Colrain
The 1858 map of Colrain is the oldest "complete" map-it shows every road and every house with its owners name.  

To answer "how many still exist"each 1858 house has been given a number (see above). A database list has been made. From his house numbers map I have made "Maplets" of smaller areas to make research easier.  (the full map is huge),

 A helper would print out their Maplet section of the worksheet , write current names on it  and then type in the names themselves into the online list - a Google Sheets online file( SEE BELOW).

 A modern road map, with road names,  helps with the 1858 map.
Note that today's Franklin Lane did not exist in 1858.