| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 326 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 327 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 328 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 329 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 330 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 331 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 332 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 333 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 334 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 335 |
 |
Mt. Pleasant Pyramid | 1919-04-18 | unclassified | |
| 336 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 337 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 338 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 339 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 340 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 341 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 342 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 343 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 344 |
 |
Mt. Pleasant Pyramid | 1919-04-25 | unclassified | |
| 345 |
 |
Mt. Pleasant Pyramid | 1920-04-02 | unclassified | |
| 346 |
 |
Mt. Pleasant Pyramid | 1920-04-02 | unclassified | |
| 347 |
 |
Mt. Pleasant Pyramid | 1920-04-02 | unclassified | |
| 348 |
 |
Mt. Pleasant Pyramid | 1920-04-02 | unclassified | |
| 349 |
 |
Mt. Pleasant Pyramid | 1920-04-02 | unclassified | |
| 350 |
 |
Mt. Pleasant Pyramid | 1920-04-02 | unclassified |