The leaders of midsized businesses often can't find advice on the unique challenges they face. Big business consultancies focus on the problems of big businesses because big businesses can afford their fees. Robert Sher, founder of CEO to CEO, a consulting firm of CEOs who advise midsize companies, works the midsize niche. We helped Sher write Mighty Midsized Companies, published in May 2015. Based on his book, we helped Sher place seven columns in HBR.org, beginning March 2014 with “Midsize Companies Must Prioritize Ruthlessly,” and concluding with “Where There’s No Margin for Toxic Leadership,” June 2014. Sher’s seven HBR.org articles have received scores of comments, testifying to the hunger for midsized businesses advice.