- Ellis, Margaret S.; Freeman, Val L., 1984, Geologic map and cross sections of the Carbondale 30‘ x 60‘ Quadrangle, west-central Colorado: Coal Map 97-A, 1 map :col. ;on sheet 83 x 108 cm., folded in envelope 30 x 24 cm.,
- Reheis, Marith C., 1984, Geologic map and coal sections of the Thornburgh Quadrangle, Moffat and Rio Blanco counties, Colorado: Coal Map 100, 1 map :col. ;58 x 45 cm., on sheet 84 x 135 cm., folded in envelope 30 x 24 cm.,
- Reheis, Marith C., 1984, Geologic map and coal sections of the Sawmill Mountain Quadrangle, Rio Blanco County, Colorado: Coal Map 99, 1 map :col. ;58 x 45 cm., on sheet 83 x 109 cm., folded in envelope 30 x 24 cm.,
- Reheis, Marith C.; Williams, Van S., 1984, Surficial geologic map of the Recluse 30‘ x 60‘ Quadrangle, Wyoming and Montana: Coal Map 81-F, 1 map :col. ;56 x 80 cm., on sheet 83 x 113 cm., folded in envelope 30 x 24 cm.,
- Robinson, L. N.; Culbertson, William C., 1984, Structure contour map on top of the Canyon Coal Bed, Birney 30‘ x 60‘ Quadrangle, Big Horn, Rosebud, and Powder River counties, Montana: Coal Map 96-A, 1 map :col. ;56 x 79 cm., on sheet 71 x 99 cm., folded in envelope 30 x 24 cm.,
- Robinson, Laura N.; Culbertson, William C., 1984, Map showing isopachs of coal and overburden of the Canyon Coal Bed, Birney 30‘ x 60‘ Quadrangle, Big Horn, Rosebud, and Powder River counties, Montana: Coal Map 96-B, 1 map :col. ;56 x 79 cm., on sheet 71 x 107 cm., folded in envelope 30 x 24 cm.,
