- Medium
- modified US Geological Survey map, chromogenic print, and text
- Dimensions
- map: 43.82 × 31.12 cm (17 1/4 × 12 1/4 in.)
photograph image: 43.82 × 55.25 cm (17 1/4 × 21 3/4 in.)
photograph sheet: 50.8 × 60.96 cm (20 × 24 in.)
text: 43.82 × 31.75 cm (17 1/4 × 12 1/2 in.)
overall: 50.8 × 127 cm (20 × 50 in.)