Try out UL Productspec at www.ul.com/productspec it is like a internet version of the White Book and provides comprehensive results with links to a lot of useful UL infomation, (UL Guide Information, Listings, application guides, articles, scope of standards, etc.). You can search by Code section, product type, category code or browse lists of equipment. Works well on smartphones, tablets and PCs. You can save it to your home screen and it acts like an app. Check it out.