Lantern Slide of the Week: Lake Oesa

This time we actually know a bit about the photographer!  The photo was taken by Benjamin S. Comstock, an early AAC member.  You can read about him in the 1942 AAJ In Memoriam, page 481.  He joined the AAC in 1908, and climbed between 1890 and 1928.  What do you think the date of this photo is?