An unidentified bird nest with four eggs.

An unidentified bird nest with four eggs.

Unmounted lantern slide of a bird nest with four eggs.

Unmounted lantern slide of a bird nest made of twigs with four eggs.

Unmounted lantern slide of a bird nest made in a sagebrush with four eggs.

An unidentified bird nest with four eggs.

An unidentified bird nest with four eggs.

An unidentified bird nest with four eggs.

Manuscript that focuses on how birds take camouflage into consideration when building nests. Document also comments on how birds' natural coloring is camouflage.

An unidentified bird nest with four eggs. Note on negative envelope indicates that the image might have been taken by Olaus Murie.