Ah yes, I will see what can be booked.
I surveyed all those sites a while back but failed to take notes (wtf?).
We like 26 too but that one was only available one day when I booked the others.
I chose what I think are the primo sites - big stretches of flat, grassy ground between them and plenty of room for tents.
Based on past attendance, I didn't see any need for more than 3.
One of those sites farther down (30, 31, 32) on the left is a swamp.
I seem to recall continuing down the road into the 50's is just plain bad in terms of decent sites.
The sites across the loop are better - 35 through 48.
If you need to see a copy of the map it's on the NPS site main page under Maps (not anywhere under the campground site).
Good luck.