Backlist Drives Print Book Unit Gains Higher Through February: “Driven by strong backlist sales, unit sales of print books rose 26% last week over the week ended February 29, 2020, at outlets that report to NPD BookScan. It was the largest week-over-week gain compared to 2020 so far this year, helping unit sales finish the first two months of 2021 with a 21.2% increase over the first two months of 2020.” via Publishers Weekly