Economy tractors were built by Engineering Products Company (EPCO) of Wisconsin. Production began at the end of World War II. Economy tractors were garden-type tractors assembled from off-the-shelf components. Economy tractors evolved as suburban lawn-and-garden tractor market rose. The Economy brand name was dropped in 1977 in favor of the Power King brand, which continued to the late 1990s.
Power King Group - Yahoo Group for EPCO tractors