- 1951 and 1971
- Wooden side-blown trumpet bound with band of crocodile skin, small hole for hanging; origin Democratic Republic of the Congo, Mbo people.
- Whistle made of wood with a metal ring on one end and wax or gum stuck to the outside of the wood; appears to be in the shape of an animal on one end.
- 1951 and 1989
- Zither with no strings, nine holes, and nine separate rectangular protrusions on each end; origin Ituri forest.