The following two sets of notes from my files bear on the role of the Communist International in China in the 1920s. The references to them in my book, The Tragedy of the Chinese Revolution, have been so frequently cited that I must assume that their full text will be found of some value by interested scholars. This is especially true of the first one, a memorandum based on an interview I had on 19 August 1935 with H. Sneevliet, the Dutch left-wing socialist who, under the name of Maring, went to China in 1921 as a representative of the Comintern. The second is a set of notes written at my request in Paris in 1935 by Albert Treint, who represented the French Communist Party on the Chinese sub-committee of the Plenum of the Executive Committee of the Comintern in Moscow in May 1927.