Visit Essex, Massachusetts on Saturday, July 18,  from 10:00 to noon, and join Historic New England and Caroline Craig, who worked for the Little family for more than 30 years, for a lecture and demonstration on canning and preserving.  Learn about traditional preservation methods, look at the equipment used, and see some of the produce of Bert and Nina Fletcher Little’s farm.  $10 for Historic New England members, and $15 for non-members.  Registration is required.  Log on to www.historicnewengland.org, or call 617-227-3956.