Dolan's earliest professional endeavors focused on the packaging, marketing, and distribution of sports and industrial films, which he produced with his wife in their Cleveland home and then sold to televisions stations which syndicated the material. Dolan sold his interests to Telenews in exchange for a job, and when he was 26 years old, he moved to
New York City and founded Teleguide Inc, a service that provided information to hotels. In the 1960s, Dolan founded Sterling Manhattan Cable, the first company to wire buildings to have cable television access. including agreements with the
New York Knicks and
New York Rangers. and spearheaded many of the company's advancements. which was expected to include six million households by the end of 2003 and 12 million by year-end 2005, but was shut down when other directors deemed it financially unsustainable. From 2001 through early 2002, Dolan was a bidder in the sale of the
Boston Red Sox. He submitted a maximum bid of $750 million, but ultimately lost out to a group headed by
John Henry,
Tom Werner, and
Larry Lucchino. In 2016, Dolan sold
Cablevision to
Patrick Drahi's
Altice USA for $17.7 billion. ==Personal life and death==