REMOVE

1. rock
2. rivers
3. construction sites
4. mountains
5. black-and-white film

WHAT

1. Visual Works (hierarchy n … (1)
2. buildings (structures) (1)
3. bushes (1)
4. construction equipment (1)

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WHERE

1. Westlock, Alberta, Canada (1)

WHEN

1. 1946 (1)
2. ca. 1946 (1)