| Call Number (LC) | Title | Results |
|---|---|---|
| Map MR-8 | Chromite, cobalt, nickel, and platinum occurrences in Alaska | 1 |
| Map MR-9 | Copper, lead, and zinc occurrences in Alaska | 1 |
| Map MR-10 | Molybdenum, tin, and tungsten occurrences in Alaska | 1 |
| Map MR-11 | Antimony, bismuth, and mercury occurrences in Alaska | 1 |
| Map MR-12 | Mineral deposits of Maryland, excluding fuels, sand, and gravel | 1 |
| Map MR-13 | Copper in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-14 | Borates in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-15 | Lead in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-16 | Vanadium in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-17 | Asbestos in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-18 | Pyrophyllite, and kyanite and related minerals in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-19 | Zinc in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-20 | Antimony in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-21 | Epigenetic uranium in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-22 | Bismuth in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-23 | Manganese in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-24 |
Gold in the United States exclusive of Alaska and Hawaii Silver in the United States exclusive of Alaska and Hawaii |
2 |
| Map MR-25 | Tungsten in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-26 | Chromite in the United States : exclusive of Alaska and Hawaii | 1 |
| Map MR-27 | Magnesite and brucite in the United States : exclusive of Alaska and Hawaii | 1 |