NPS, like most companies at the time, collaborated with lumber and building suppliers. They printed brochures containing sets of plans for distribution to home builders in an effort to entice them to purchase the complete plans and materials. Most of the brochures bore the name and contact information of the building supplier.
The homes were small by today's standards, given that most Americans in the 1950s had an average income of $5,000 to 10,000 a year and generally purchased homes in the 1000 square foot range. Average square footage had grown to just over 1200 square feet by 1960.
From midcenturyhomestyle.com
