| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 26 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 27 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 28 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 29 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 30 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 31 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 32 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 33 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 34 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 35 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 36 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 37 |
 |
Mt. Pleasant Pyramid | 1912-04-26 | unclassified | |
| 38 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 39 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 40 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 41 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 42 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 43 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 44 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 45 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 46 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 47 |
 |
Mt. Pleasant Pyramid | 1913-04-04 | unclassified | |
| 48 |
 |
Mt. Pleasant Pyramid | 1913-04-11 | unclassified | |
| 49 |
 |
Mt. Pleasant Pyramid | 1913-04-11 | unclassified | |
| 50 |
 |
Mt. Pleasant Pyramid | 1913-04-11 | unclassified |