| James Valentine A Heron 1870 (ca) Albumen silver print, from collodion glass negative 23.8 x 18.9 cm (9 3/8 x 7 7/16 in.) (image) 41.5 x 33.1 cm (16 5/16 x 13 1/16 in.) (sheet) Fine Art Museums of San Francisco Achenbach Foundation, Museum purchase, Mrs. Milton S. Latham Fund, Accession Number: 1990.3.18 LL/104787
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