Cabin in the Snow — Deborah Hopkinson

STORMS ARE BREWING
When Charlie and Papa arrive in Lawrence for supplies, they find the bustling Kansas town threatened by border ruffians from proslave Missouri. Papa decides to remain behind with other free-soil settlers to defend the town, so Charlie must drive the wagon back to the family's isolated claim by himself.
At home a different sort of storm is brewing -- gray skies, bitter cold, and vicious winds warn that a prairie blizzard is coming. Charlie is always getting into trouble for daydreaming and forgetting his chores. Now he has to show he's grown-up enough to help Momma, his sisters, and his newborn baby brother survive in their tiny cabin in the snow.