in Thoreau’s Journal:

I have just been reading the account of Dr. Ball’s sufferings on the White Mountains. Of course, I do not wonder that he was lost. I should say: Never undertake to ascend a mountain or thread a wilderness where there is any danger of being lost, without taking thick clothing, partly india-rubber, if not a tent or material for one; the best map to be had and a compass; salt pork and hard-bread and salt; fish-hooks and lines; a good jack-knife, at least, if not a hatchet, and perhaps a gun; matches in a vial stopped water-tight; some strings and paper. Do not take a dozen steps which you could not with tolerable accuracy protract on a chart. I never do otherwise. Indeed, youmust have been living all your life in some such methodical and assured fashion, though in the midst of cities, else you will be lost in spite of all this preparation.

[https://www.loc.gov/resource/gdcmassbookdig.threedaysonwhite00ball/?st=gallery]