Frederick Kempe, "Berlin 1961: Kennedy, Khrushchev, and the Most Dangerous Place on Earth." 4 p.m. Sept. 12. Discussion. Free. LeCraw Auditorium, Georgia Tech College of Management, Tech Square (5th and Spring streets), Atlanta. 404-894-2000, www.gatech.edu/calendar/event.html?nid=69376.

A former Wall Street Journal reporter and the current president of the Atlantic Council, a conservative think tank, Kempe revisits the genesis of the Berlin Wall, the crisis surrounding it, and its long-term effect on East-West relations.

Renea Winchester, "In the Garden With Billy: Lessons About Life, Love & Tomatoes." 6 p.m. Sept. 12. Book club discussion. Free. Book Exchange, 2956 Canton Road, Marietta. 770-427-4848, www.bookexchangemarietta.com.

The story of two unusual friends who face challenges with a combination of faith, humor and a lifetime of gardening experience.

Sen. Bob Graham, "Keys to the Kingdom." 2 p.m. Sep 13. Lecture and book signing. Free. Carter Presidential Library & Museum Theater, 441 Freedom Parkway, Atlanta. 404-865-7100, www.jimmycarterlibrary.gov.

In Graham’s debut thriller, the murder of a former co-chair of the 9/11 Congressional inquiry commission sparks an investigation that reveals a deadly Saudi-al-Qaida conspiracy.

Haywood Smith, "Wife-in-Law." 10 a.m. Sept. 13. Peerless Book Store, 8465 Holcomb Bridge Road, Alpharetta. 770-650-7323, www.peerlessbookstore.com.

Smith (“The Red Hat Club”) plays fastball with second marriages in this story about a recently divorced woman whose philandering ex weds and moves in with her best friend and across-the-street neighbor.

Jennifer McCoy and Francisco Diez, "International Mediation in Venezuela." 5 p.m. Sept. 14. Discussion and signing. Free. Carter Presidential Library & Museum Theater, 441 Freedom Parkway, Atlanta. 404-865-7100, www.jimmycarterlibrary.gov.

McCoy, director of the Carter Center’s Americas Program, analyzes the effort of the center and the broader international community to prevent violent conflict and preserve democratic processes. Former President Jimmy Carter will join McCoy for a short discussion.

Kadir Nelson, "Heart and Soul: The Story of America and African Americans." 7 p.m. Sept. 15. Talk and signing. Free. Auburn Avenue Research Library, 101 Auburn Ave. N.E., Atlanta. 404-730-4001, www.afpls.org/aarl.

The award-winning children’s book author and illustrator (“Just the Two of Us,” “Ellington Was Not a Street”) uses events throughout African-American history to tell the story of a people whose struggles and achievements helped define America.