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1 drawing (8 x 18 cm.) of a Yellowfin croaker (Umbrina sp.) created 15 Jul 1865 by Jacques Burkhardt at Rio de Janeiro, Brazil.Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: ARC 209-007
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1 drawing (7 x 17 cm.) of a Croaker (Otolithus sp.) created 12 Jul 1865 by Jacques Burkhardt at Rio de Janeiro, Brazil.Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: ARC 209-026
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1 drawing (10 x 19 cm.) of a Croaker (Homulon sp.) created 1 Jun 1865 by Jacques Burkhardt at Rio de Janeiro, Brazil.Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: ARC 209-033
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1 drawing (7 x 18 cm.) of a Croaker (Otolithus sp.) created 11 Jul 1865 by Jacques Burkhardt at Rio de Janeiro, Brazil.Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: ARC 209-005