Beginning on Dec. 21, guests of the Winterthur Museum, Garden & Library will be able to step back to a time when the du Pont children enjoyed the popular Lionel Standard Gauge toy train of their era. “Twelve Days of Christmas,” a festive toy train display presented by the Standard Gauge Module Association, will be on view in the Brown Horticulture Learning Center through Jan. 1, 2025. To purchase tickets, visit www.winterthur.org.