Among my favorite books that were mentioned in the Legal Theory Bookworm in 2019 are these ten:
Measuring Social Welfare: An Introduction by Matthew D. Adler
The Company They Keep: How Partisan Divisions Came to the Supreme Court by Neal Devins & Lawrence Baum
Between Truth and Power: The Legal Constructions of Informational Capitalism by Julie E. Cohen
The Public's Law: Origins and Architecture of Progressive Democracy by Blake Emerson
Intimate Lies and the Law by Jill Elaine Hasday
A Theory of Legal Personhood by Visa A.J. Kurki
The Code of Capital: How the Law Creates Wealth and Inequality by Katharina Pistor
This Land Is Our Land: The Struggle for a New Commonwealth by Jedediah Purdy
Liberalism, Neutrality, and the Gendered Division of Labor by Gina Schouten
Practical Equality: Forging Justice in a Divided Nation by Robert Tsai
Also a favorite, but listed separately, because I am a contributor:
Moral Puzzles and Legal Perplexities: Essays on the Influence of Larry Alexander, edited by Heidi M. Hurd
And a special mention to the G. Edward White's three volume Law in American History, completed in 2019:
Law in American History: Volume 1: From the Colonial Years Through the Civil War
Law in American History, Volume II: From Reconstruction Through the 1920s)