A few days back, I spent some time going through a World Book encyclopaedia set that my parents had bought for me when I was 4. It was basically an expensive investment back then into what would turn into a lifelong reading habit.
Most of the information in it is practically worthless today unfortunately - Saddam Hussein still alive, as were Katharine Hepburn and King Hussein of Jordan, no mention of Ceres and Pluto was still a planet, and the Internet and software had barely a mention. Most articles had less information than a standard Wikipedia article.
That being said, the way information was presented in them still outshines anything one may find on the internet today. Even the simple elements - neat diagrams and relevant images, proper sectioning and organization of the text, footnotes to other relevant articles...
Long gone are the days when I would simply take a bowl of ice cream and a volume and just read it end to end.