The Charleston Library Society’s Speaker Series continues with Geoffrey Cowan, author of the newly published “Let the People Rule: Theodore Roosevelt and the Birth of the Presidential Primary.”

Cowan will discuss the book with guest interviewer John Huey, former editor of Time magazine, at 6 p.m. Friday, Feb. 19. Tickets are $20 for Library Society members and $25 for nonmembers. Call 843-723-9912 or go to www.charlestonlibrarysociety.org.

Cowan is a best-selling author with experience as a lawyer, academic administrator, government official, professor, nonprofit executive and Emmy Award-winning producer.

“Let the People Rule” tells the story of the four-month campaign that changed American politics forever. In 1912, Theodore Roosevelt came out of retirement to challenge his close friend and handpicked successor, William Howard Taft, for the Republican Party nomination. To overcome the power of the incumbent, Roosevelt seized on the idea of presidential primaries, telling bosses everywhere, “Let the people rule.”

A wine reception and book signing will follow the discussion.

Adam Parker