"Musical Memories" at Caribou Historical Center and Museum, with music and comedy from the 1940s through 1960s. Open to public 12-4 p.m.; all are welcome.

Backyard Getaway Tour, 12-3:30 p.m., rain or shine. Visit seven backyard escapes with optional reception at UMPI president's house. To benefit Zillman Family Greenhouse project. FMI: 768-9755 or email deborah.roark@maine.edu.

Annual chicken barbecue by the Limestone-Caswell Historical Society, 11 a.m.-1 p.m. at the museum on Access Highway. $10.

Farmers' market at Riverside Park, 8:30 a.m.-1 p.m. Vegetables, meat, eggs, baked goods and more. Concession available.

Pie and ice cream social, 11 a.m.-3 p.m., Church of the Good Shepherd. Indoor yard sale, 9 a.m.-3 p.m. 116 Main St.