Trying to fill the last bed (~48 sq.ft., 9 inches deep, so 36 cubic feet) in the veggie garden area, but can't buy dirt like I have in the past. Instead I would like to compost in place. I already have an approximately 5 sq.ft. compost pile as well as some leaves to collect, but would like to add manure. Both to add volume and to improve the resulting soil quality. Does anyone know of a source of horse or chicken manure for NW OKC? The closer the better, but I am absolutely willing to drive. I realize I won't be able to use the bed for a few months, but the sooner it is filled, the sooner I can use it.