Gig 601XL Builder wrote:
http://www.pilotsbooks.com/wallcharts.htm

This might work. They have 3 chart sets that cover the entire US

VFR/IFR Planning charts
large JNC-A charts
larger JNC charts
largest
east on one side/ west on the other
40" x 36" each side
(full USA - 72" x 40")
scale - 1:3.4 million

I have these...buy them while they can... I think NGA is going to stop
making these available in paper form.

The best chart was the old IFR/VFR wall charts that NOAA used to make,
but they stopped producing them some time ago. These were neat because
they came in two sections so you could hang up either the entire country
IFR, the entire country VFR, or IFR and VFR together for half the country.

There was a guy at Oshkosh who mosaics sectionals together and prints
them on large format (HP) printers. I could do this at work (I have
the printer and the software to do this is what I do for a living).