In 1939, Korczak received a letter from an old Lakota Indian chief, Henry Standing Bear, who lived on South Dakota’s Pine Ridge Indian Reservation.
Aastal 1939 sai Korczak kirja vanalt lakota indiaanipealikult Henry Seisvalt Karult, kes elas Lõuna - Dakotas Pine Ridge’i indiaanireservaadis.