Lee, if you're interested in Sears homes, I recommend "Houses by Mail" by K.V. Stevenson and H.W. Jandl. Illustrations and floor plans on every one of the more than 300 pages. (It's published by the National Trust for Historic Preservation).
Amazon has it new for $25.84 and used (good condition) for $10.35. I've used it to identify several Sears homes in my small Midwestern town.
Sears was not the only firm that offered kit built houses...and they were available nationwide from a firm called Jim Walters Homes until they quit in 2009. Others may still do so.
