Endurance: Shackleton's Incredible Voyage by Alfred Lansing

This is a short book about an incredible adventure. Hardship, cold, resignation to misfortune, but no despair, just perseverance of almost unimaginable extent. Not to mention navigation and seamanship with almost nothing but knowledge and crude tools. The IMAX movie was beautiful and yet the book is so much more evocative of how hard it really was.