Renowned rock author Martin Popoff’s exhaustive and detailed timeline of Deep Purple milestones from 1980 until right now, often to the day, including some similar bands, influences, cultural milieu, tour stuff, recording sessions, charts, singles, certification news, break-ups, personal stuff, trivia for miles, and lots and lots of artist quotes to add to the entries, turning the book into a quasi-oral history but loaded with factual matter. But as you’ve noticed, this is about family. So the text weaves in and out of the story of Purple proper, the dastardly diaries of Rainbow, Whitesnake, Gillan, Blackmore's Night, all the solo projects, guest slots, Gary Moore, Black Sabbath and Black Country Communion, always with contextual explanation plus rare and very cool archival advertisements of shows and records.