Michimac Potatoes This page first published: Apr 19, 2005 · Updated: Jun 1, 2018 · by CooksInfo. Copyright © 2021 · This web site may contain affiliate links · This web site generates income via ads · Information on this site is copyrighted. Taking whole pages for your website is theft and will be DCMA'd. See re-use information. Not in commercial use. History Notes Michimac Potatoes were developed at Michigan State University from a cross between Emmet potatoes and a potato referred to as “IA902-3,” Released 1977.