Whenever I need to buy furniture—and it's been a few times over the past few months (yes, bookcases are useful things)—I check out Modhaus, an online store and "gallery of modernist furnishings, decorative arts and cultural artifacts of the 1950s, '60s, and '70s." Our apartment is rapidly becoming a shrine to the buying tastes of the Modhaus owners. How much wood can one possibly fit into a living room?