Theodore Mann

CollX LLC is a company that provides a platform for collectors to snap photos of their trading cards and instantly get the current market price. CollX is based in Haddonfield, NJ and has subsidiaries in the United States. The company allows collectors to add their cards to their collection and track their overall portfolio value. CollX also offers services such as buying, selling, grading, and trading of cards with other collectors. The company was founded by a father-son duo who wanted to know the value of their trading cards and has grown into a movement that is redefining how people collect. The company was founded by Fred Barnes, Kostas Nasis, and Theodore Mann, who has been the CEO since incorporation.

University of Pennsylvania Press engages in the editing, production, marketing, and publication of researches and educational literature. It also offers books, journals, and periodical issues. The company was founded on March 26, 1890 and is headquartered in

Philadelphia City Paper publishes newspaper and magazines. It publishes information on local news, arts, music, movies, food, events, history, music venues, restaurants, shopping, and transportation. The company was founded by Bruce Schimmel in 1981 and is headquartered in Fort Washington, PA.

The Atlantic Monthly Group engages in the provision of monthly magazine publishing services. It publishes on articles like politics, world affairs, business, science, education and the arts, engaging fiction, poetry, food, and book reviews. The company was founded in 1857 and is headquartered in Washington, DC.

Part of WPP Plc, Grey Worldwide is a British company that provides advertising and communications services. The company is based in London, UK. The CEO of the company is James R. Heekin.