easiest way to remove artwork from back glass

[tbullet]

I have EATPM and a Scared Stiff. I want to remove the artwork from the back glass to get them signed by Elvira. What is the safest and easiest way to do so? I'll roll them up in a cardboard tube to transport them to get them signed.
These are plastic sheets correct? no painted artwork on the glass correct? I should just slide them off the backglass right?

Suggestions?

Thanks.

 

[LTG]

They both are translites. ( plastic sheets )

Because of age and scarcity, I think I'd lie them flat in a big box for artwork prints or something.

They get brittle from age and heat, and rolling them could cause cracks or breaks.

LTG : )

 

[tbullet]

I was hoping I wouldn't have to transport them that way since it will be a pain in the butt lugging that box around. Good suggestion though.