REMOVE

1. landscapes (representations)
2. freight cars
3. railroads
4. children
5. black-and-white film
6. boys

WHAT

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

More 

WHERE

1. Westlock, Alberta, Canada (1)

WHEN

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