This is the corner above the right side of Wiessner slab. Climb the slab, set your belay, and contemplate leading this climb in 1934 with ancient gear.
This is a stiff but protectable lead that takes a variety of gear. You can protect just about anywhere if you can hang in there. I've seen some serious falls on this when the leader decided to just go for it.
Hassler Whitney is famous for the Whitney-Gilman ridge on Cannon, put up earlier in 1929.
I dont know why but the Wiessner crack should be listed from the ground up. Starting in the cave behind the slab in the same corner is the way to go if you enjoy 90' long cracks. climb through the hole, good stuff.