I used to live in Alaska and drove the Alcan in about 1964. There's a book, I believe it's called "Milepost" that gives information on every mile of the trip including services etc. We used to consider it mandatory for the trip but now it may not be. I'd definitely have one just in case. And yes to the mosquito repellant, they are big enough to drill holes in the windscreen, and can drive mamels crazy. Also, take twice as much money and half the "stuff".