4 years in the making, I finally found myself on the summit of Mt. Langley.

Day 1 - With the exception of some confusion regarding the numbering of the lakes, things essentially went as planed. Here's a link to the trip report and full gallery:
Mt. Langley Backpack, Day 1 – Cottonwood Lakes Trail to Cottonwood Lake #3, August 28 2015
...and some highlights. Clicking on a photo will bring you to the trip report/photos:

Riley's typical spot when he sees my gear piling up near the door


JP Headed up the trail. Langley visible in distance


Soaking my feet and ankles in Lake #3


View from our campsite


Sunset