1. Southern Andes, snow-capped Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Overviews Location: Peru Andes Date: 1981 Format: Image
2. Southern Andes from the air Collection: Billie Jean Isbell Andean Collection Set: Zenith sun series Date: 1981 Format: Image
3. 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
4. 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
5. Southern Andes Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Overviews Location: Peru Andes Date: 1981 Format: Image
6. Snow-capped Southern Andes Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Overviews Location: Peru Andes Date: 1981 Format: Image
7. San Cosme with squatter settlements Collection: Billie Jean Isbell Andean Collection Location: Lima (Peru) 7 de Octubre (Lima, Peru)San Cosme (Lima, Peru) Date: 1970 Format: Image
8. 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
9. Quito, hang gliders Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
10. Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
11. Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
12. Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
13. Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
14. Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
15. Lake Titicaca from the air Collection: Billie Jean Isbell Andean Collection Set: Zenith sun series Location: Titicaca Lake (Peru and Bolivia) Lake Titicaca Date: 1981 Format: Image
16. Hang glider over Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
17. Hang glider over Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
18. Hang glider Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
19. Cuzco overview (aerial view) Collection: Billie Jean Isbell Andean Collection Set: Zenith sun series Location: Cuzco (Peru) Cusco (Peru) Date: 1981 Format: Image
20. Cuzco aerial view Collection: Billie Jean Isbell Andean Collection Set: Zenith sun series Location: Cuzco (Peru) Cusco (Peru) Date: 1981 Format: Image