An  incomplete set of The Lu Lu Multiplier  New York: Published by Samuel Raynor.  No date. c1850.   These heavy gauge cards are printed and hand colored and may be the origin of the "flash cards" we used as children to learn our multiplication tables.  Each of the nineteen (19) cards has an hand colored engraving and a verse that rhymes with the sum of the multiplication, e.g..... And now with butterflies sporting is the verse for Twice 7 are 14. or Twice 9 are 18 Here is old Dobbins waiting.  A scarce item.|n||n|Condition: moderate to heavy wear; well used.