1. THE ISLAND OF LOST MAPS, by Miles Harvey (Broadway, $14.95). A true tale of cartographomania: folks steal the darnedest stuff.
2. HOLY WAR, by Karen Armstrong (Anchor, $17). A scholarly ex-nun examines the Crusades and their never-ending resonance.
3. LONDON, by Andrew Gumbel (Cadogan, $10.95). Like all the guidebooks in the Cadogan clan, an intelligent immersion.
4. CULTURE SHOCK! THAILAND, by Robert Cooper and Nanthapa Cooper (Graphic Arts, $13.95). Don't go to see stupas without it.