Arizona, California, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, Nevada, North Dakota, Ohio, Oregon, South Dakota, Washington, Wisconsin, Wyoming

and very short-term (does an airport or train stop count as a visit?):
Alaska, Colorado, Illinois, Indiana, New Hampshire, New York, Pennsylvania

so…17(24)/50? Damn. i thought i was further along. and btw, for those who know, 17?????