| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 276 |
 |
Mt. Pleasant Pyramid | 1920-01-23 | unclassified | |
| 277 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 278 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 279 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 280 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 281 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 282 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 283 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 284 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 285 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 286 |
 |
Mt. Pleasant Pyramid | 1920-01-30 | unclassified | |
| 287 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 288 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 289 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 290 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 291 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 292 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 293 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 294 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 295 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 296 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 297 |
 |
Mt. Pleasant Pyramid | 1922-01-20 | unclassified | |
| 298 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 299 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified | |
| 300 |
 |
Mt. Pleasant Pyramid | 1922-01-27 | unclassified |