1 "Fișier:The_crime_of_the_Congo_(IA_crimeofcongo00doyl).pdf".

Fișier:The crime of the Congo (IA crimeofcongo00doyl).pdf

used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:The_crime_of_the_Congo_(IA_crimeofcongo00doyl).pdf...