- Medium
- graphite, charcoal, pastel, wax crayon, printed map, and technical data, on two sheets of paper in two parts
- Dimensions
- sheet (top panel): 37.8 x 243.3 cm (14 7/8 x 95 13/16 in.) sheet (bottom panel): 106.5 x 243.4 cm (41 15/16 x 95 13/16 in.) overall size (for both panels): 147 x 244 cm (57 7/8 x 96 1/16 in.)
- Genre
- Drawings
![[Men and women in boats]](https://media.getty.edu/iiif/image/84838e43-98af-47c2-b58c-621691239284/full/843,/0/default.jpg)
![Over the River, Project for the Arkansas River, Colorado [top panel]](https://api.nga.gov/iiif/a265092c-7906-4e41-864f-6132f25bd385/full/843,/0/default.jpg)
