• by Joe Mandese  @mp_joemandese, October 1, 2017

Samuel Irving “Si” Newhouse, founder of Conde Nast Publications, one of the most highly regarded magazine publishing companies among advertisers and agencies, died Sunday. He was 89.

Newhouse is the second industry-shaping magazine publisher to pass away in a week, following the death of Playboy founder Hugh Hefner.

Newhouse, whose other assets included Advance Publications, which owns various newspapers, a controlling stake in Discovery Communications, as well as social-media news-sharing community Reddit.com, oversaw some of America’s most prized publications. Venerable titles include Vogue, The New Yorker and Vanity Fair -- from analogue to digital publishing.

Newhouse, who had long since stepped down from a day-to-day management role, had been serving as chairman emeritus. His brother Donald ran one of the most successful magazine publishing companies of their time.

The company was founded by their father Samuel Newhouse in 1922.