In the Walker tradition, all performances are free with no tickets or reservations required. Programs start at 7:30 p.m. at the City Auditorium on Prince Street in Concord. Here’s what’s upcoming:

Marlin Darrah: Turkey, Cradle of Civilization

Join the world’s most-traveled filmmaker, Marlin Darrah, to explore Turkey’s 8,000-year history of art, architecture, and archaeology on Oct. 26. See Turkey’s most intriguing, alluring and historic sites including idyllic Mediterranean beaches, spice markets, wool and silk carpets, a spectacular 10th century mountaintop Christian monastery and frescoes, the ancient Silk Road, the alluring eastern market city of Erzurum, and the famous Mt. Ararat, where it is said Noah’s Ark came to rest. Marlin Darrah will be at the City Auditorium for questions and conversation.

Frenemies: The Art World’s Greatest Rivalries

Jane Oneail will examine the ways some of the world’s greatest artists challenged and competed with each other for commissions, sales and status on Nov. 2. Learn about rivalries between da Vinci and Michelangelo, Constable and Turner and Matisse and Picasso and decide who history has treated most kindly.

The Wyeths: An American Artistic Dynasty

The Wyeth family of artists is known for their somber realism and subtle storytelling. In this program also on Nov. 2, Jane Oneail will explore the style of painting and illustration established by N.C. Wyeth in the early 1900s and passed on and re-interpreted by his children, primarily Andrew Wyeth, and his grandson Jamie Wyeth.