Jevon MacDonald

“The librarians sent books to the hospitals. They answered a thousand questions put to them by the military and civil authorities: How could Leningrad make matches? How could flint and steel lighters be manufactured? What materials were needed for candles? Was there any way of making yeast, edible wood, artificial vitamins? How do you make soap? The librarians found recipes for candles in old works of the eighteenth century.”
― Harrison E. Salisbury, The 900 Days: The Siege of Leningrad