For anyone who lives anywhere near a landfill, I have a suggestion if you are looking for scrap wood and tree trimmings. If the local landfill doesn't have a composting operation on site or with which they have an arrangement, they just bury all that useful stuff with the trash, and while it is part of the revenue stream it isn't much. Well, not here anyway, back East and in the NW it might be more.
Anyway, having worked at landfills for the last 12 years I can tell you the staff fields calls pretty regularly from people with nothing but scrap wood and tree trimmings to dispose of, especially in spring and fall; and not only do the customers hate putting it in the landfill and paying to do so, the staff often dislikes it too, but for the most part it violates company rules and sometimes laws if they try and remove it from the waste stream
once it arrives at the site. My suggestion is, call them, give them your phone number, and tell them if they get calls about these materials, you are willing to accept it. Keep in mind, you should insist on calls, do not give your address or people will show up at your house uninvited. You may not get many calls, as most people, given the alternative, are shorter on time than cash and will pay to dump it anyway. If you get calls, be VERY CLEAR that you will accept only wood, and be there to help unload to ensure you don't wind up with their trash.
Alternatively, you can post on Craigslist, the local Freecycle, or the local whatever-yours-is-called-nowadays that used to be the Penny Saver or Thrifty Nickel. Use a leader that gets the attention of your target - "Free Wood Recycling" or some such thing. You can even put a sign out at the end of your driveway if you are home enough to monitor visitors. Even if you don't have neighbors that have wood to give you, they may know people who do.
If it gets you one or two loads a year, it's that much less you have to go find. Locally we had a developer buy a large piece of land with several dead trees on it, and they just posted a sign that said, "Free Fire Wood" - it got cleaned up and didn't cost the developer anything but the sign