I can't give that cottonwood away. It makes lousy lumber, and even worse firewood. I did call Potlatch Corp. in Lewiston, Idaho to see if they would be interested. There is about five loads for wood pulp for paper and they were not interested. Its kind of a waste, but it looks like I'll have to burn it.
Is there a timber minded scout troop in your area? That wood could be put to good use by them for pioneering projects. I think a lot of troops have got away from that kind of stuff unfortunately, but my experience with them is all east of the mississippi. Maybe out west the kids still have fun roping logs together. Work with them to get it hauled off to one of their backcountry sites, or perhaps ask to have them build you some cool towers and bridges on your own property.