REMOVE

1. silver gelatin print
2. Photographs
3. New Orleans
4. First half of the twentieth …

WHAT

1. silver gelatin print (1)

WHERE

1. New Orleans (1)
2. North American; American (1)

WHO

1. Harness racing (1)
2. Louisiana State Museum (1)
3. Teunisson, John N. (1)

WHEN

1. 1900 (1)
2. 1949 (1)
3. First half of the twentie … (1)