51.   ...old manuscripts written on parchment.

52.   The book references many other authors who have written on this topic.

53.   A plethora of books have been written on the subject.

54.   Ancient people wrote on parchment.

55.   The Prime Minister of Papua New Guinea, Rabbie Namaliu, rejected the independence declaration as invalid, unlawful and not worth the paper it is written on.

56.   He dictated a London telephone number and she wrote it on her pad.

57.   The bullish spread has a purchased call on the low exercise price and a call written on the middle exercise price.

58.   The bearish spread has a call written on the E M and a call purchased on the high exercise price.

59.   Individual authors could write on the decline of national intelligence but public debate did not necessarily lead to action.

60.   This single sheet of paper, though, tells us even more about the dramatic meeting between Gould and Darwin than the words written on it.