REMOVE

1. rock
2. soil
3. trucks
4. 1937
5. 1936

WHAT

1. Christmas (1)
2. exterior views (1)
3. families (1)
4. family portraits (1)
5. group portraits (1)
6. houses (1)
7. landscapes (representatio … (1)
8. mothers (1)
9. silver gelatin (1)
10. sky (1)
11. Visual Works (hierarchy n … (1)

Less

WHERE

1. Alberta, Canada (1)

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1930 (1)
2. 1930 December 25 (1)