REMOVE

1. Photographs
2. silver gelatin print
3. Conveyor belts
4. Louisiana State Museum
5. 1900
6. First half of the twentieth …

WHAT

1. silver gelatin print (1)

WHERE

1. North American; American (1)

WHO

1. Conveyor belts (1)
2. Louisiana State Museum (1)
3. Teunisson, John N. (1)

WHEN

1. 1949 (1)
2. First half of the twentie … (1)