Redwood City, Calif.-based Drivers License Guide Co., recently released the sixth edition of “International I.D. Checking Guide.” The new edition features more than 330 driver's licenses and identity cards from more than 140 countries, with an emphasis on those with heavy tourist traffic or heightened security. Intended for use by law enforcement, government agencies, businesses and financial institutions, the 208-page guide includes full-color samples and detailed descriptions of valid I.D.s. To purchase, visit www.driverslicenseguide.com or call (800) 227-8827.