| 1914 | Ontonagon Area, Reported by L'Anse Sentinel, 5/15/91 |
| 10/57 | Bruce Crossing |
| 1967 | M38 and Firesteel River |
| 1967 | 107 Porcupine Mt. State Park |
| 1970 | Porcupine Mountains. Assistant Park Manager finds tracks in clay in hiking trail |
| 11/16/76 | 8 miles N of Bruce Crossing |
| 1976 | Military Hill, Ontonagon |
| 07/76 | Paulding |
| 1978 | Bergland near Holiday Mt. K, Small cougar with mottled spots |
| 04/78 | Lake Gogebic |
| 11/17/90 | East of Bruce Crossing; Observed by Ron Howell |
| 1997 | Porcupine Mountains - Deer carcass found in a tree |
| 11/99 | Observed by Lon K. |
| 09/00 | Cougar observed eating a fresh button buck whitetail deer for about 10 minutes near the Firesteel River in Greenland Township |
| 10/01 | Observed by Daryl M. of Marquette |
| 08/02 | Observed cougar in Porcupine Mountains while on a mountain bike on a closed trail just after crossing a bridge over the Iron River |
| 06/03 | Simar Airport Road; Observed by Janet Holmstrom |
| 07/03 | M-38 near Firesteel River; Observed by Janet Holmstrom |
| 08/01/04 | 2 miles N of North Country Trail (Kun de Kun Fall Trail) on Highway 45 |
| 08/22/05 | M38, Simar, Wasas Road |
| 09/18/05 | S of White Pine b/w White Pine and Silver City |