Free maps!

I just learned that most states' departments of transportation will send out free paper maps on demand.

Maryland: http://www.sha.state.md.us/SHAServices/mapsBrochures/maps/freemaps.asp
Virginia: http://www.virginiadot.org/travel/maporder.asp
Pennsylvania: http://www.dot.state.pa.us/Internet/Bureaus/pdBOS.nsf/OfficeServicesHomePage?OpenFrameSet&Frame=main&src=infoCustServForm?OpenForm
DC: No paper maps, but plenty of stuff online at http://ddot.dc.gov/ddot/cwp/view,a,1250,q,559674,ddotNav_GID,1586,ddotNav,|32399|.asp

Extra bonus points to the District of Columbia Department of Transportation for its logo: