| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 301 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 302 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 303 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 304 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 305 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 306 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 307 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 308 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 309 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 310 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 311 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 312 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 313 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 314 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 315 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 316 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 317 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 318 |
 |
Mt. Pleasant Pyramid | 1923-01-26 | unclassified | |
| 319 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified | |
| 320 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified | |
| 321 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified | |
| 322 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified | |
| 323 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified | |
| 324 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified | |
| 325 |
 |
Mt. Pleasant Pyramid | 1924-01-18 | unclassified |