If not for the Madison Public Market, Isthmus Yarns would not exist.
Sarah Dawson has a day job in tech and a passion for eco-friendly Scandinavian knits. In January, she heard about merchant opportunities at the Madison Public Market, which opens Thursday at 202 N. First St. after some 20 years of planning.
“I was like, ‘They should put a yarn store in there,’” Dawson said. “Two weeks later, I was like — ‘Could I put a yarn store there? No. I don’t know anything about running a business. Not me.’…