‘Slash: An Intimate Portrait,’ a new photo book coming out in October will celebrate the last 20 years of the rockers life in photos. Two decades of previously unpublished photos of the guitar God taken by a legend in his own right, rock photographer Robert Knight capture Slash in many different lights ranging from candid photos to funny shots, showing an intimate look at the man underneath the infamous top hat.

The book features a foreward written by Slash’s good friend Ronnie Wood of The Rolling Stones and a preface penned by Aerosmith guitarist Joe Perry. The rest of the book is written and rounded out by Richard Bienstock, the current senior editor of Guitar World magazine and executive editor of Guitar Aficionado magazine. The photo book will also coincide with an upcoming special edition release of ‘Apocalyptic Love,’ due out around the same time.

In a new interview released this past week by NME, Slash revealed that he once walked in on his mother and David Bowie. “He was always over – they were always together. I caught them naked once. They had a lot of stuff going on, but my perspective was limited. Looking back on it, I know exactly what was going on. When I look back on that whole combination of people, I can only imagine how freaky it was.” So can we.

Slash’s mother, Ola Hudson, was Bowie’s costume designer in the mid-’70s during his ‘Thin White Duke’ period. This involved Bowie’s album ‘Station to Station’ and movie ‘The Man Who Fell to Earth,’ both of which were released in 1976. “My mum started working with David professionally at first,” he continued. “I’m pretty sure that’s how it started. Then it turned into some sort of mysterious romance that went on for a while after that…She did all that and he was around for a while.”