Nice bunch of rounds you have stacked. Are you going to split them all soon? I can appreciate the amount of work that takes. I cut/split between 10-11 cords each year to keep my family and my older inlaws supplied. We have a gas furnace, but try to heat as much as we can with our Jotul fireplace insert. My inlaws heat similarly. I always scavenge wood where I can...from tree cutters in town, to blowdowns along fields, etc. It's a lot easier than cutting stuff up in the woods. I'm not picky about what it is if I can get it with minimal work. Sumac, poplar, sassafras, and even slightly punky wood are fine by me if I can get it easily...just so long as it's not pine/pitchy. I got lucky recently and have been cutting up mostly locust and some hackberry trees that a neighbor had taken down, which will probably get me to 8 split cords. I'll get the rest from few more girdled locust trees that should have a jump start on drying. Being mostly good, hard locust, this will be the nicest firewood we've had in a few years. I love burning wood, but man it is a lot of work.