Thanks to John for pointing out these Field Notes books, designed by Draplin Design Company of Portland, OR. Other well-designed products include calendars, pens and pencils, all looking like they are from a retro shipping warehouse or perhaps the island from LOST.
If you actually want to take some notes in the field, the old Rite-in-the-Rain company makes some nice kits for all sorts of scientific, military and hunting uses. Below is the Field Book Kit and the Upland Bird Journal Kit. Both include cordura covers and all-weather pens for serious work.