Kevin speaks with Rosemary Thorton, author of The Houses That Sears Built, and Avi Friedman, author of Pre-Fab Living, about a former groundbreaking concept: the kit home. Between 1908 and 1940, Sears, Roebuck, and Co. sold 70,000 homes through their catalogs. These were called Kit Homes, and they ranged from simple one-story…