REMOVE

1. salted paper print
2. Photographs
3. National Gallery of Canada
4. before 1855
5. 1850

WHAT

1. Photograph (1)
2. salted paper print (1)

WHERE

1. British (1)
2. U.K. (1)

WHO

1. Horne, Fallon (1)
2. National Gallery of Canad … (1)

WHEN

1. 1855 (1)
2. before 1855 (1)
3. birthdate unknown, died 1 … (1)