| Index Entry | Opera glass, sun spots visible by |
| Location | Philadelphia |
| Citation | PC.772.122 7-14 Nov 1772:1762 [=1742] (305) The spots on the sun make a formidable appearance. There is one lately risen (which is followed by a number of lesser maculae) of a very considerable magnitude; it is visible even by an opera glass. |
| Generic Title | Pennsylvania Chronicle |
| Date | 1772.11.14 |
| Publisher | Goddard, William |
| City, State | Philadelphia, PA |
| Year | 1772 |
| Bibliography | B0033655 |