Frommer's -

Wikipedia: Frommer's is a travel guidebook series and one of the bestselling travel guides in America. The series began in 1957 with the publication of Arthur Frommer's book, Europe on $5 a Day. Frommer's has expanded to include over 350 guidebooks across 14 series, as well as other media including the award winning website which covers over 3,500 destinations. In 2007, Frommer's celebrated its 50th anniversary of guidebook publishing.  Since May 2007, Arthur Frommer has been actively blogging about trave on the website.