In late winter when the days are warm but the nights are still cold, the sap starts to run in sugar maples. Throughout New England, buckets and tubing begin to adorn trees, and the steady plinking of sap dripping into buckets can be heard throughout the sugarbush. This month’s literature guide spotlights titles that can be used to learn about sugaring – both the science behind it and the role that it plays in rural New England culture.