- E-bookNatural History of the Ground Squirrels of CaliforniaJoseph Grinnell
- E-bookGold Hunting in AlaskaJoseph Grinnell
- E-bookBirds of Song and StoryJoseph Grinnell
- E-bookGold Hunting in AlaskaJoseph Grinnell
- E-bookOur Feathered FriendsJoseph Grinnell
- E-bookJoseph Grinnell's Philosophy of NatureJoseph Grinnell
- E-bookThe Subspecies of the Mountain ChickadeeJoseph Grinnell
- E-bookBirds of Song and StoryJoseph Grinnell
- E-bookOur Feathered FriendsJoseph Grinnell