Need Greenhouse Glass

My husband tore down some Lord & Burnham Commercial Glass Orchid Greenhouses in San Leandro, CA in the 1970's. He put one up in Mendocino County but we had to move. We want to put one up here in Yuba County CA. We need 20W x 18H glass, preferably used or salvaged. We need at least 1200 panes of glass. Our house is going to be 29'11" wide with metal trusses and 50' long, it will have redwood walls and benches. This has been my dream for the last 25 years and I hope someone can steer us in the right direction.
Thank you for your input,

iuki.

Have you looked to see if you have any salvage yards near you. Mine sells old window and actually some new ones from any where from a dollar to 5 dollars. I got some double pane windows ther a few years ago for $10.00 each, they were 30 x 48 size and double pane too. I would check around for that type of place if I were you.