It began as the first store north of Minneapolis. The home was owned by Minnesota's first senator and, later, became home of the first botanist at the University of Minnesota. But seven years ago, the house, built in 1852, wound up on the Preservation Alliance of Minnesota's endangered list and ultimately, it went into foreclosure. With few preservation programs available in Minnesota, the futures of some of Minnesota's oldest homes are in jeopardy, said Jennifer Kirby, a broker who deals only in historic homes. The oldest house in Anoka County became the exception -- and is now the oldest house in Minnesota currently for sale. Rescued by attorney and handyman Kurt Glaser and restored with artifacts found at antique stores and foreclosure auctions, this "green" home serves as a reminder of the past and a model for the future. Glaser has provided old photos of the house and various owners along with a copy of the journal by the botanist who lived there for 80 years.