Donald T. Phillips is an American author widely regarded as a pioneer in the modern genre of historical leadership writing. Born in 1952, he rose to international acclaim with his bestselling book Lincoln on Leadership, which became the first in his trilogy on American leadership alongside The Founding Fathers on Leadership and Martin Luther King Jr. on Leadership. His debut book helped establish an entirely new category of business writing, drawing lessons on decision-making, communication, and crisis management from the lives of historical figures rather than modern executives. Beyond his leadership trilogy, he has written or coauthored 20 books and collaborated with notable figures including basketball coach Mike Krzyzewski, golfer Phil Mickelson, and baseball legend Cal Ripken Jr. Lincoln on Leadership alone has been translated into seven languages and remains in print through numerous editions, reflecting its lasting influence on leadership literature. Known for bringing historical figures to life with meticulous research and practical application, Phillips's work continues to shape modern leadership writing and inspire readers across the world.