Admission to the Two Mississippi Museums is free every Sunday. Admission to the Two Mississippi Museums is free every Sunday.

The annual Possum Ridge model train exhibit will open at the Two Mississippi Museums on December 2. For more than 40 years, the model trains and the town of Possum Ridge have been a holiday tradition delighting both children and adults. The site depicts a typical Mississippi railroad town of the 1940s and has been growing and changing since its first year. Possum Ridge will close on December 31.

At noon on Wednesday, December 3, author Ted Atkinson will present Monumental Designs: Infrastructure and the Culture of the Tennessee Valley Authority as part of the History Is Lunch series. Atkinson, associate professor at Mississippi State University, will explore representations of the power and influence of the TVA in books, film and art from the New Deal era to the present.