Nathan M. Pettyjohn

aisle411, Inc. provides mobile in-store location services platform for retailers. Its platform allows shoppers to map products, offers, and lists by aisle location, as well as discover information based on a shopper’s in-store location; and enables retailers to reach shoppers at the shelf with context and location relevant information that enhances the shopper experience. Its indoor retail mapping and location service, and mobile platform allows shoppers to navigate through retail stores to find exactly what they want by collecting, organizing, and monetizing retailers’ product inventory, location data, and enterprise software space planning systems and store maps. The company was founded by Matthew Kulig and Nathan M. Pettyjohn in April 2008 and is headquartered in St. Louis, MO.

Yellow Book USA, Inc. publishes yellow page directories. Yellowbook's marketing portfolio includes: Website design, hosting and optimization; scalable, customizable SEM and SEO programs. It offers advertising media programs and local business information for consumers and advertisers in different parts of the United States. The company was founded in 1930 and is headquartered in Rockville Centre, NY.