10 books • 7 series
Frommer's Easyguide to Puerto Rico (Easy Guides) (Frommer's Easy Guides)
Frommer's Puerto Rico (Frommer's Complete Guides, #975)
Frommer's Puerto Rico Day by Day (Frommer's Day by Day - Pocket)
Frommer's Portable Puerto Rico (Frommer's Portable)
Puerto Rico Off the Beaten Path (Off the Beaten Path Puerto Rico, #2)
Puerto Rico (Insiders Guide: Off the Beaten Path)
Pitchers of Perfection
MVPS
John Marino's Bicycling Book
John Mar Bicyc Bk C