With gains across all categories, unit sales of print books rose 10.5% in the week ended Dec. 12, 2020, over the comparable week in 2019, at outlets that report to NPD BookScan. Adult nonfiction unit sales increased 14.5% over the week ended Dec. 17, 2019, as Barack Obama’s A Promised Land remained the top title, selling nearly 325,000 copies. Two newly released books also contributed to the gains in adult nonfiction: Bag Man by Rachel Maddow sold more than 46,000 copies, and The Last Days of John Lennon by James Patterson sold more than 36,000 copies. Adult fiction also had a good week, with sales up 16.3%. Charlie Mackesy’s The Mole, the Boy, the Fox and the Horse stayed #1 on the category list, selling more than 63,000 copies. Ready Player Two by Ernest Cline remained in the second spot, selling 45,000 copies. The 7.4% increase in juvenile nonfiction sales was helped by The Try Not to Laugh Challenge by Crazy Corey, which sold almost 30,000 copies. Other top titles in the week were Dinah Bucholz’s The Unofficial Harry Potter Cookbook, which sold nearly 28,000 copies, and The Complete Cookbook for Young Chefs, which sold more than 24,000 copies. Juvenile fiction sales increased 5% over 2019. Cat Kid Comic Club by Dav Pilkey was #1 in the category, selling more than 101,000 copies. With sales of 7,720 copies, The Manual to Manhood by Jonathan Catherman was the top-selling title in YA nonfiction, helping to drive a 33.9% increase in print unit sales in the category.