A comment on the Maine maps. The biggest issue with Maine is if you need to go off trail to get to civilization. Unlike the majority of the AT, it can be a couple of days especially if you go the wrong direction to get to civilization. Cell coverage is not great to non existent and usually its only up on the ridgelines so any sort of navigation via cellphone will probably not work. The maine maps generally give you enough overview so you can navigate the logging roads to get out to major highway where you can hitch.