J. Thomas, Myto gaimardii; Thysanopoda inermis; Thysanopoda neglecta, 1842–1848, print, Nasjonalmuseet (National Museum of Norway), Oslo. https://dartabase.art/cite/nmk/0210415042200

J. Thomas, Planche relative au mirage, 1842–1848, print, Nasjonalmuseet (National Museum of Norway), Oslo. https://dartabase.art/cite/nmk/0210415042653

J. Thomas, Meteorologiske kurver, pl. III, 1842–1848, print, Nasjonalmuseet (National Museum of Norway), Oslo. https://dartabase.art/cite/nmk/0210415041129

J. Thomas, Pasiphæa tarda; Pandalus borealis, 1842–1848, print, Nasjonalmuseet (National Museum of Norway), Oslo. https://dartabase.art/cite/nmk/0210415030476