Catalogue of birds collected on Smithsonian African Expedition, volume 3, December 21, 1909-March 21, 1910, Uganda to Khartoum
Licence: pd-age — free to host, not yet added. Read it at Internet Archive
Sudan ArchiveالعربيةSudan ArchiveالعربيةLicence: pd-age — free to host, not yet added. Read it at Internet Archive