When Winter Came is a fascinating firsthand story of the great influenza pandemic of 1918-1919 and the work of Dr. Pierre Sator. It discusses his life and practice as a prairie physician and his heroic efforts to cope with the worst health crisis of its time. The book discuses what motivated and steadied him and propelled him to accomplish what he did. His stories invite comparisons and reveal commonalities with our own stories of another pandemic one hundred years later - which has taken far more lives, despite medical advances that Dr. Sartor and his contemporaries could never imagine.