Visit Essex, Massachusetts on Saturday, July 17 (date change from original post,)  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. In one summer at the property she put up more than 800 jars of jams, jellies and preserves. She will make the Little family’s favorite homemade preserve: raspberry jelly.  Learn about traditional preservation methods, look at the equipment used, and see some of the produce of Bert and Nina Fletcher Little’s farm. Caroline will offer advice and expertise on techniques for preserving your own garden produce and recipes for other summer fruit delicacies.  Samples will be available for tasting.  $12 for Historic New England members, and $18 for non-members.  Registration is required.  Log on to www.historicnewengland.org, or call 978-768-3632.