Municipal Marketplace Online is the most comprehensive, authoritative, qualified & up-to-date source of information, including more than 11,000 municipal bond professionals, 850 firms, 2,000 Municipal Issuers, and 2,800 offices. This exclusive service will connect you and your firm to the companies, information and decision-makers you need to expand and grow your business. The Red Book and Municipal Marketplace Online information comes directly from recognized industry firms who first must qualify to be listed and then pay an ongoing listing fee.