How much paper can be made from a 100 ft tall Douglas fir tree?

Here's one opinion:

"Since trees are different sizes, it would be difficult to say how much paper comes from one tree. According to one paper manufacturer, however, a cord of wood measuring 4 feet by 4 feet by 8 feet—or 128 cubic feet—produces nearly 90,000 sheets of bond-quality paper or 2,700 copies of a 35-page newspaper."

This information was taken from the Boise Cascade Corporation website. The Mead Corporation website also has useful facts and information about papermaking.