Shirley A. Craighead lives in Moose, Wyoming, in Grand Teton National Park. She worked closely with her late husband, Dr. Frank C. Craighead, Jr., as he researched and wrote For Everything There Is a Season. She has hiked, fished, rafted, and observed flora and fauna throughout Grand Teton and Yellowstone National Parks.
Dr. Frank C. Craighead, Jr., kept detailed, daily journals, recording the patterns of life that revolve around the changing seasons. He wrote For Everything There Is a Season after studying the plants and animals of the Yellowstone ecosystem for more than forty-five years