I've got some tyvek survival maps used by
military pilots. These are already colored perfectly.

..... I've got tons of them, only use one
and these were destined for the dumpster. The one I use was marked up
and damaged.

If they're colored perfectly and you have tons of them,Frank, why not
hire a Rider truck and bring them to Penns Clave, instead of
Dumpstering them?

... I can understand the reluctance to damage them.

Me too! I'm a dedicated cartophile. I have a small number of
Sectional Aeronautical Charts old enough to show the Adcock ranges
that were the means of aerial navigation prior to about 1955 or '60.

Most contemporary pilots have never even seen one. I want to leave
them to an aviation museum when I check out.

vince