This Trad Gang never ceases to amaze me. I am always learning stuff here....John Havard just taught me that The Brits make a more accurate version of my Cammenga compass. I never knew...not that I'll run out an Buy a Marching compass, but the knowledge is power. Thanks John.
Ron, the best source I know of for topos is the US Government's US Geological Survey maps. I usually order them out of Denver. Start out by requesting a grid map of the state you're interested in, then identify which sheet you need from the grid. Order the individual sheets by name based upon the state grid map. I have a phone number (rolodex at work, sorry) for the good folks in Denver. You''ll want to speak directly with the clerks and tell them you want a Mil Grid map. They offer the maps both ways as civilian and military versions. Of course the 7 1/2 minute maps offer the best compromise between perspective and detail. Although they are paper the quality of detail seems best w/ the gov maps over the commercially made plastic maps. I'll usually waterproof my maps with Aqua seal before leaving home.