Glad to help
You need to get a map for each forest district from our local source, library or sport stores.
However, the maps are a mess and one is not like the other one. The best is two have two maps printed by two different company and work with both. On my last trip, I bought a Delorme Atlas for Oregon and had a detailed topographic
maps for back roads, recreation sites and GPS grids and is the best map that you can get at this hour in Portland from what I know. Haves more forest service or blm roads on this map then forest service maps ( just don't call forest service for help from a road that they don't have in their maps

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Yes you right, on east side most of the land is private and no trespassing at all on most of this private lands or roads and BLM haves the most land there and definitely you need a BLM map, I never found one to buy and probably contact them by phone is the best. Some of the Forest service maps from South Oregon and East Oregon have the BLM roads to, but again don't put your base just in that map.
That pickup truck is little beet to big for this roads.
Are places where our cruiser are to big for this roads to. In special for OHV roads, some of them are so narrow that only the Heep can be in his element there.
Well, this winter will be a mess one, the Nina is here all ready and lots of the back woods roads will blocked by fallen tree. I need to get my hand in a chainshaw if I will get a job first of course

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If you need more help with the maps, I can point you to the right store/s and map/s.
good luck
