BILLBOARD ADVERTISING, Interstate 35, Near Rush City, MN, and Minnesota State Highway 70, artwork to be provided by DNR, 8 weeks; BILLBOARD ADVERTISING, Interstate 35, Near Carlton, MN, and Minnesota State Highway 210, artwork to be provided by DNR, 8 weeks; BILLBOARD ADVERTISING, US Highway 10 near Little Falls, MN, artwork to be provided by DNR, 8 weeks; BILLBOARD ADVERTISING, US Highway 10 near Rice, MN, artwork to be provided by DNR, 8 weeks; BILLBOARD ADVERTISING, US Route 169 near Aitkin, MN, and Minnesota State Highway 210, artwork to be provided by DNR, 8 weeks; BILLBOARD ADVERTISING, US Highway 71 near Park Rapids, MN, artwork to be provided by DNR, 8 weeks; BILLBOARD ADVERTISING, US Route 169 near Mille Lacs, MN, artwork to be provided by DNR, 8 weeks