Collection: Karl Marx and Frederick Engels Correspondence 1870-1895 Letter ID: 92p155v44 Date: 1871-06-16 Source: Karl Marx and Frederick Engels: Collected Works. Vol. 44. London: Lawrence and Wishart, 1989
Collection: Karl Marx and Frederick Engels Correspondence 1870-1895 Letter ID: 147p228v44 Date: 1871-10-21 Source: Karl Marx and Frederick Engels: Collected Works. Vol. 44. London: Lawrence and Wishart, 1989