The book I am searching for is a young adult novel I read in the 1980's about a family relocating to Alaska.  They lived in an isolated cabin, walked to a lone general store to get supplies and place an order for clothing and household items through a Sears Catalog.  They ordered in summer for a delivery of winter items, items didn't arrive until Spring.  A teenage girl with at least one sibling, mom gets depressed, and either dad or brother or both get lost and possibly killed. One chapter talks about them laying in supplies for winter and the girl sleeps on pallets of canned food.  It was a paperback book, white cover, the title had something to do with Alaska without saying Alaska, referencing the 24 hours of sun / dark I think.