REMOVE

1. Photographs
2. gelatin silver print
3. US, PA, Pittsburgh
4. George Eastman House

WHAT

1. gelatin silver print (4)
2. landscape, industrial (1)
3. landscape, river (1)

WHERE

1. US, PA, Pittsburgh (4)
2. European; British (2)
3. North American; American (2)

WHO

1. George Eastman House (4)
2. Coburn, Alvin Langdon (2)
3. Smith, W. Eugene (1)
4. Webb, Todd (1)

WHEN

1. 1910 (2)
2. 1945 (1)
3. 1951 (1)
4. 1955 (1)
5. ca. 1950 (1)