Wow!! I did some work there in 1994(?) and they had just introduced what I thought were the first small number of wolves into the area (near Salmon, ID) - like 6 or 8 wolves. They must have introduced many more than that over the years.
I was close!:
The first wolves were released at Corn Creek on the main Salmon River-
Shipment of the wolves to both the Yellowstone acclimation pens and to the Idaho wilderness was briefly delayed when the Farm Bureau won a temporary injunction from the U.S. Court of Appeals. (The Farm Bureau has probably been the longest-standing and most aggressive of the major groups opposed to wolves.).
Nevertheless, on January 14, 1995 the first four wolves were released to the wild after an unplanned and perilous truck ride down the Salmon River road to its end at Corn Creek. At Corn Creek Bar on the Salmon River at the edge of the Frank Church/River of No Return Wilderness, all but one wolf immediately leaped out of its portable kennel.