I found several sites about wolves attacking humans in North America, on google. The first few reports are from the past, but keep reading, there are more current ones. According to the writer of the report, the attack must be by a wolf that was never around humans, must result in the death of the human who was attacked, and the wolf must be killed, tested for rabies, and found to be non-rabid before they will consider it an "attack on a human."
Nevertheless, there are some.
Here ya go--cut and paste that into your browser..
http://www.natureswolves.com/human/aws_wolfattacks.htm
Yes. There was a series in Field & Stream (I think, but it could have been Sports Afield). It was by Olive Fredeckson (I think) in the mid-60's one was titled "The Wolves were the Worst". She lived alone in the woods of Canada and did a lot of hunting and trapping. Good series.
I just wrote Field & Stream asking for a compilation of Corey Ford's Lower Forty. They could probably put every issue of the magazine ever printed on a CD.