Memorandum sent by Isa Yusuf Alptekin, President of the Center for the Liberation of East Turkestan, to President Richard Nixon about the necessity to include the people of East Turkestan among 'captive nations.' This letter was published in Isa Yusuf Alptekin's Turkish language book "Doğu Türkistan İnsanlıktan Yardım İstiyor" (East Turkistan Expects Help from Humankind).