Books

Yellowbill Cafe and Bakery, 1425 14th St, Sacramento, displays two books:

First, a paperback book, from 2007, titled, "7th Letters First", detailing mural artwork by The Seventh Letter collective. From the LA Weekly:

"The seventh letter is, of course, G, which in this case stands for “Gods of Graffiti” and represents what may be the most ambitious, racially diverse and prolific crew ever assembled. With more than 100 members operating under the Seventh Letter banner, names like Revok, Retna, Saber, Push, Rime and Zes are just a few to watch as they fast become L.A.’s modern muralists."

http://www.laweekly.com/arts/the-rise-of-the-seventh-letter-2149613

The book seems out of print, now, and may have represented a promotional tool for a film

More:
http://knowngallery.com/
http://store.theseventhletter.com/
https://www.royalelastics.com/
http://theseventhletter.com/blog/tsl-films/
http://gallery.theseventhletter.com/

Second, a book about coffee, "Hiroshi's Latte Art and Barista Style" (2012)
ISBN-13: 978-4862561091