The Fraser Institute has a great ongoing project entitled Essential Scholars.
Books released so far are:
F.A. Hayek by Donald J. Boudreaux:
"Nobel laureate economist Friedrich Hayek (1899 – 1992) is one of the most influential thinkers of the 20th century and his work still resonates with economists and scholars around the world today. Two decades after Hayek’s death, his ideas are increasingly relevant in an era where governments grow ever larger and more interventionist. Essential Hayek is a project of the Fraser Institute, comprised of a book, this website, and several videos, that aim to explain Hayek’s ideas in common, every-day language. It is a resource for all who value liberty."
Adam Smith by James Otteson
"Adam Smith (1723–1790) is widely hailed as the founding father of the discipline now known as economics, and he is widely credited as the founding father of what is now known as capitalism. Smith’s 1776 book, An Inquiry into the Nature and Causes of the Wealth of Nations, is often cited as the beginning of both economics and capitalism, and its influence since its publication ranks it among the most important works of the last millennium."
and
Milton Friedman by Steven E. Landsburg
"When economists are called “influential,” it usually means they’ve changed the way other economists think. By that standard, Milton Friedman was one of the most influential economists of all time. He revolutionized the way economists think about consumption, about money, about stabilization policy, and about unemployment."
Check them out at the links above or click here...