Louise Kollenbaum is an artist. She has designed for magazines and written books. Her first two books were coffee table books with beautiful sleeves for collecting and pressing flowers and leaves. Her new book, "Souvenirs de Voyage," expands on this collector's theme. We come across all kinds souvenirs when travel -- for example, a matchbook might remind you of a romantic dinner in Prague. Louise's book is all about what to do with those keepsakes. She says just looking for the ephemera of the journey keeps our eyes open as we travel.