On the far left side of the west face, ascend 5.10a cracks to a large ledge. Continue up ledge and cracks up and left across the face (5.9) for another rope length until intersecting with the West Face Route at the top of pitch 2. Two more pitches of off-width and wide crack on the West Face Route leads to the summit block.
Information for this route was found in the West Summit register two years after its ascent. The Wilsons proposed it as a North Face route, but the topo left in the register clearly places it on the West Face. It could also potentially be called the West Face, Left, but I like using the FA team names if obvious terrain features have already been used - Chris
The best descent option is by down-scrambling the SW Buttress to the roof described, then two to three 30m rappels will reach the bottom of the buttress.