I'm Searching....and Finding

I've been searching in a random sort of way. As I mentioned earlier, I had gone to the local public library and did a search using the term "cotton." Through that search I found the book, Up Before Daybreak: Cotton and People in America by Deborah Hopkinson, Scholastic, 2006. I started reading this book and thought about some other avenues this research could take: the invention of the cotton gin and how that changed growing cotton, Eli Whitney--the inventor of the cotton gin, the Civil War and growing cotton, slavery and growing cotton. Since I'm thinking of this with first graders in mind, these new avenues don't quite fit what they can understand. But it was interesting to think about how this project could be done school-wide!
I also found another book about growing cotton there at the library, but haven't really looked at it yet.
I also searched at the school where I work and found two more books on cotton. By looking at www.BarnesandNoble.com I discovered a title that I thought would provide some helpful information, so requested that book through interlibrary loan.
I searched the catalog of a nearby public library and found another title that I thought might be helpful, but haven't gone to check it out yet.
This week I called the local county extension agent, thinking that he would have some access to other states' county extension resources. Instead of any special access, he said he could do a Google search for "growing cotton + Texas county extension office" (or any other cotton growing state). That was a dissapointment! When I learn what all the cotton growing states are, I can do that search myself! (If I were researching a crop grown locally, I believe he would have resources for me.)
I have done a Google search using the term "cotton" and found particularly two websites that I think will have some valuable resources. The website for the National Cotton Council of American is www.cotton.org. www.cottonsjourney.com is "The only cotton education site for classroom teachers providing curriculum, literature resources, links to cotton." I've explored that last site a bit and believe there are some valuable resources there.
At this point, I think I can find the answers to my questions, but I'm also leaping ahead in my thinking and trying to figure out the "wrapping" part and that has me in a quandry as much as anything else!