Maine’s economy has historically been based upon resource extraction and use. Furthermore, Maine’s has historically contained only a very small middle class. Most Mainers could reasonably be described as working class while a small population of upper class elites (known variously as Great Proprietors, owners or sports) has provided structure and capital to Maine industry.
Wingard, Geoff, "MSSS Curriculum Connection Series - Lesson Number: 07" (2012). Maine Song and Story Sampler: Curriculum Connections Series. 7.