http://www.wiadomosci24.pl/artykul/odnaleziono_unikalny_film_z_louisem_armstrongiem_wideo_346803.html Louis Armstrong w Amsterdamie (29.10.1955). By Herbert Behrens / Anefo - Nationaal Archief, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=33548035 Licencja: CC4.0
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