Here it is book #18. The price you pay on the stairs will be reimbursed by this amazing less known view of my favorite city, and your book. At the bottom of coit tower is a stairway that holds this view. Stop on the last step of the first flight with your back to the thick tree trunk. Look right, your book’s hiding in a little cave. Please log after you’ve found it.
Transmissions From The Wastelands 
Found it.
Oh man, swept from right under my nose. Haha.
@mpsilva, congratulations!
Andre, Just hitting you up here since you asked me to on Instagram.