Thanks for the comments. This poster was designed by Michael Dabbs. It was printed on either 80# or 100# text, which allowed it to be folded without the paper cracking. It held up suprising well despite the thiness of the paper.
i've got an old popular mechanics that gives the blueprints on building a framed version of this process. never thought it would be applicable to posters...... obviously i was wrong.
great concept with the windmills too !!