This one has been torturing me for years... desperately searching to a juvenile fiction novel that is similar to the Newbury Award winning book "Hatchet" by Greg Paulsen. Boy crashes in the wilderness, pilot dies. Boy has to survive the winter with the help of a crotchety old man who rescues him. Would have been published sometime prior to 1988, as that's when my 5th grade teacher read it to the class (I'd ask him, but he has since died). Any help in identifying this book would be greatly appreciated.