John Marino, "Frommer's Puerto Rico Day by Day"(repost)

At last, a travel guide that tells you how to see the best of everything-in the smartest, most time-efficient way.
* The best of Puerto Rico from one day to two weeks
* Thematic tours for every interest, schedule, and taste
* Walking tours of the island's best-loved attractions
* Hundreds of evocative color photos
* Insightful advice written by a savvy newspaper reporter based in San Juan