REMOVE

1. cardigans
2. sitting
3. children
4. shadows
5. hats
6. bridges (built works)

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. buildings (structures) (1)
4. bushes (1)
5. construction equipment (1)

More 

WHERE

1. Westlock, Alberta, Canada (1)

WHEN

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