1. Map of Peru showing Central and South Andean Departments Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
2. Illustrations from Guaman Poma de Aylla Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
3. Illustrations from Guaman Poma de Aylla Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
4. Illustrations from Guaman Poma de Aylla Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
5. Illustrations from Guaman Poma de Aylla Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
6. Illustrations from Guaman Poma de Aylla Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
7. Illustrations from Guaman Poma de Aylla Collection: Billie Jean Isbell Andean Collection Location: Peru Date: 1978 Format: Image
8. Southern Andes Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Overviews Location: Peru Andes Date: 1981 Format: Image
9. Southern Andes from the air Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Overviews Location: Peru Andes Date: 1981 Format: Image
10. Rio Pampas Saqsamarca Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Puna Location: Peru Pampas River Valley (Peru) Saqsamarca (Peru)Saxamarca (Peru) Date: 1981 Format: Image