Here is a copy of the 1907 15 minute topo. It clearly shows Whitney Pass on that slope above Trail Camp (note the X, not the words). The contemporary 7.5 minute topos, with the words shifted to the right, are wrong.
Sorry for the scribbling on the map; my friend* obviously didn't know I'd be using it these many years later. Next is the same map, but with the trail to Whitney Pass and the old main trail to Trail Crest before the 97 switchback were constructed, delineated.

See also a picture of
Whitney Pass from the summit of Wotans Throne.
And here is a shot of the slopes lower down, with the 97 switchbacks on the right.
This is the same picture with pieces of the old trail marked in.
My 1937 15 minute topo shows the same info, but the trails are not drawn in.
A few years ago, I climbed to the top of Whitney Pass, and followed it a few hundred feet south of the crest. It is still in good shape, as it follows the terrain over toward Discovery Pinnacle.
*Chester Versteeg