http://pec.lib.wvu.edu/record/P181531957How to make jellies, jams and presrves at home.Government document.. "This publication supersedes Farmers' Bulletin 1800, Homemade jellies, jams, and preserves."<br />United States. Agricultural Research Service. Human Nutrition Research Division.Jam.Cooking (Jam)Cooking (Jelly)Jelly.14256