These coordinates are now mostly verified and/or recorded off my GPS12. Datum NAD83 and WGS84 were interchanged, however in North America the two differ by less than 2 meters, so no worries. I've now set my unit to WGS84 as it should be on this standard for GPS. Obviously some of these items are vague, such as Helen, or the Heart. But if you think one is grossly off, please mail me using the comment form.

Summit:
41.409472218
-122.1939731797

Bunny Flats:
41.35403
-122.23362

Horse Camp:
41.37230
-122.22966

Helen Lake:
41.388853
-122.20986

The Heart (unverified):
41.398888808
-122.2044443619

Base of Red Banks / Top of Heart:
41.39775
-122.20052

Base of Misery Hill / Top of Red Banks:
41.40144
-122.19877

Top of Misery Hill / Start of Summit Plateau:
41.40542
-122.19786

Summit:
41.409472218
-122.1939731797

Northgate Trailhead:
41.46834
-122.17372

Northgate route campsite @ 10,000ft:
41.43346
-122.19418

Our turnabout point on Bolam Glacier:
41.40947
-122.17367