| Lake Huron, Thunder Bay | near Alpena, Michigan, USA | late 1880's | ||
| BurtLake(?) | Cheboygan, Michigan, USA |
|
mid 1970's | |
| Lake Michigan, Little Traverse Bay(?) | Petoskey, Michigan, USA | probable hoax | 1892 | |
| Muskegon | Michigan, USA | probable hoax | 1892 | |
| Trout Bay | Michigan, USA | mid 1920's |