All of these photographs were taken in Yellowstone National Park.

Elk (Wapiti) in Gibbon River, winter, near Norris Junction (NPS Photo)

Black wolf in acclimation pen, 1996 (NPS Photo)

Two wolves in the Lamar Valley, July 1995 (NPS Photo)

Wolf pup in acclimation pen, 1996 (NPS Photo)

Rose Creek Wolf Pack near Elk Trail, Lamar Valley (NPS Photo)

Wolf running in snow in acclimation pen, 1995(NPS Photo)

Wolf running in snow in acclimation pen, 1995 (NPS Photo)