The southwest corner must have been rebuilt a few years back, so there wasn't any siding to restore. Just a junky piece of foam sheathing under the asbestos siding that was pulled off. I removed the foam sheathing, used half inch plywood for the new sheathing. I added new tar paper and also got to reuse some siding from other parts of the house.
Painted up and ready to go...complete with a new corner board.