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. Hang glider over Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
16. Hang glider over Quito Collection: Billie Jean Isbell Andean Collection Location: Quito (Ecuador) Date: 1981 Format: Image
17. Quito, hang gliders 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. Southern Andes Collection: Billie Jean Isbell Andean Collection Set: Vertical ecology of the Andes: Overviews Location: Peru Andes Date: 1981 Format: Image
20. 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