REMOVE

1. salted paper print
2. Photographs
3. British
4. National Gallery of Canada
5. birthdate unknown, died 1858 …
6. birthdate unknown, died 1858 …

WHAT

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

WHERE

1. U.K. (1)

WHO

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

WHEN

1. 1850 (1)
2. 1855 (1)
3. before 1855 (1)
4. birthdate unknown, died 1 … (1)