Stranger Things, Darkness on the Edge of Town by Adam Christopher

Christmas,  Hawkins, 1984. All Chief Jim Hopper wants is to enjoy a quiet first Christmas with Eleven , but his adopted daughter has other plans.  Over Hopper's protests, she pulls a cardboard box, marked New York out of the basement and the tough questions begin. Why did Hopper leave Hawkins all those years ago? What does Vietnam mean and why has he never talked about New York?
Loved, soft cover.