He worked on a series of large tempera paintings on mythological subjects that were widely exhibited across Europe and the United States .
The years before the outbreak of World War I saw Southall at the height of his achievement and fame .
Southall worked on a series of large tempera paintings on mythological subjects that were widely exhibited across Europe and the United States .
The years before the outbreak of World War I saw Southall at the height of his achievement and fame .