DOES ANYONE want a slovenly sofa? Have you ever struggled to prop up and fluff the saggy, detachable back cushions on a sectional sofa so they form a neat line before guests ring the doorbell? If so, you might feel such unkempt designs have had their run.
Sectionals weren’t always the plague they are now. In midcentury America, when they began proliferating, plenty of examples with tightly upholstered backs existed: from Vladimir Kagan’s sensuous Serpentine and blocky Omnibus to solid-backed versions from Sears and Kroehler….