I cheated. First, start from bottom right and go up, seems to only highlight the middle, your friends.
Now, save it and drop it into a spreadsheet. Sort the column, there will be towns and a few other things mixed in, but it is alphabetical, so it is easy to get them out.
I would wait and do them all first, then remove the extra artifacts.
I am use to doing stuff like this in a spreadsheet, so to me it is not a big deal I guess.