REMOVE

1. mountains
2. sky
3. landscapes (representations)
4. grand hotels

WHAT

1. Lake Louise, Alberta, Can … (1)
2. exterior views (1)
3. lakes (bodies of water) (1)

More 

WHERE

1. Lake Louise, Alberta, Can … (1)

WHO

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

WHEN

1. 1929 (1)
2. 1940 (1)
3. circa 1930 July 16 (1)