Just want to send a quick plug for the shop. Olive-Route can be seen in 2 books that came out this August! The first one is called Little Book of Letterpress and features loads of lettepress shops all around the country. Written by Charlotte Rivers and has a great intro about the history and practice of letterpress. The second one is called Letterpress (with some Japanese text I can't understand). Actually the whole book is in Japanese so I unfortunately can't tell you much more!
Both are published by Chronicle Books.