A group of unidentified Mazama climbers in their climbing gear on their expedition in Mount Rainier National Park. Mount Rainier is visible in the distance.

A group of unidentified Mazama climbers in their climbing gear on their expedition in Mount Rainier National Park. Mount Rainier is visible in the distance.

Two unidentified Mazamas climbers on their expedition in Mount Rainier National Park.

An unidentified group of Mazamas swimming in a lake beside the snow on their expedition in Mount Rainier National Park. Phoebe Katherine Finley and William Finley Jr. swimming in the bottom right of image.

An unidentified group of Mazamas swimming in a lake beside the snow on their expedition in Mount Rainier National Park. Phoebe Katherine Finley and William Finley Jr. swimming in the bottom right of image.

An unidentified group of Mazamas swimming in a lake beside the snow on their expedition in Mount Rainier National Park.

An unidentified group of Mazamas in bathing suits playing leapfrog in the snow on their expedition in Mount Rainier National Park.

An unidentified group of Mazamas in bathing suits playing leapfrog in the snow on their expedition in Mount Rainier National Park.

A group of four Mazamas, including P. L. Campbell and Balfour Daniels, on their ascent of Mount Rainier in Mount Rainier National Park.

An unidentified group of Mazamas members in their camp at Reflection Lake.