* 1881 —
Jenny Marx (Karl's wife) died in December 1881
Major Works
Notes on Adolph Wagner's “Lehrbuch der politischen Ökonomie”, Marx (Bilingual)
Mathematical Manuscripts, Marx
Correspondence
Minor Works
Letter to Vera Zasulich, Marx
Articles for The Labour Standard, Engels
To the Editor of The Daily News, Marx & Engels, 1 April
Ethnographical Notebooks, Marx, 1880-1881-1882