Lawrence & Wishart, who hold the copyright for the Marx Engels Collected Works, have directed Marxists Internet Archive to delete all texts originating from MECW. Accordingly, from 30th April 2014, no material from MECW is available from marxists.org.
English translations of Marx and Engels from other sources will continue to be available.
See Internationale Marx-Engels-Stiftung, for information about original manuscripts of Marx and Engels.
You can buy a volume of MECW for $25-$50 from on line booksellers
General Introduction Publ. Volume 1 (M) August 1835-March 1843. 1975 Volume 2 (E) August 1838-December 1842. 1975 Volume 3 (M) March 1843-Aug 1844. (E) May 1843-June 1844. 1975 Volume 4 (M/E) 1844-45, incl. Holy Family & Condition of Working Class 1975 Volume 5 (M/E) April 1845-April 1847, including German Ideology. 1975 Volume 6 (M/E) 1845-48, including Poverty of Philosophy and Manifesto 1976 Volume 7 (M/E) 1848, articles for Neue Rheinische Zeitung. 1977 Volume 8 (M/E) 1848-49, articles from Neue Rheinische Zeitung. 1977 Volume 9 (M/E) 1849, articles from Neue Rheinische Zeitung. 1977 Volume 10 (M/E) 1849-51, including Peasant War in Germany 1978 Volume 11 (M/E) 1851-53, including Eighteenth Brumaire 1979 Volume 12 (M/E) 1853-54, mainly on British Colonialism. 1979 Volume 13 (M/E) 1854-55, re Revolutionary Spain and Crimean War. 1980 Volume 14 (M/E) 1855-56, incl. material on British politics and Crimean War. 1980 Volume 15 (M/E) 1856-58, mainly Europe and India. 1986 Volume 16 (M/E) 1858-60, mainly events in Europe 1980 Volume 17 (M/E) 1859-60, including Herr Vogt and military matters. 1981 Volume 18 (M/E) 1857-62, Articles for Encyclopaedia. 1987 Volume 19 (M/E) 1861-64, including material on American Civil War 1984 Volume 20 (M/E) 1864-68, including Value, Prices and Profit. 1985 Volume 21 (M/E) 1867-70, re International Workingmen's Association. 1985 Volume 22 (M/E) 1870-71, re Fanco-Prussian War. 1986 Volume 23 (M/E) 1871-74, re International, Bakunin, Housing Question. 1988 Volume 24 (M/E) 1874-83, Crit. / Gotha Prog. & Utopian & Scientific 1989 Volume 25 (E) Anti-Dühring, Dialectics of Nature 1987 Volume 26 (E) 1882-89, including Origin of the Family, etc 1990 Volume 27 (E) 1890-95, re Europe. 1990 Volume 28 (M) Economic Works, 1857-1861 1986 Volume 29 (M) Economic Works, 1857-1861 1987 Volume 30 (M) Economic Works, 1861-1863 1988 Volume 31 (M) 1861-63, Economic Manuscripts 1989 Volume 32 (M) 1861-63, Economic Manuscripts 1989 Volume 33 (M) 1861-63, Economic Manuscripts 1991 Volume 34 (M) Economic Works, 1861-1864 1994 Volume 35 (M) Capital, Volume I 1996 Volume 36 (M) Capital, Volume II 1997 Volume 37 (M) Capital, Volume III 1998 Volume 38 (M/E) 1844-51, Letters 1982 Volume 39 (M/E) 1852-55, Letters 1983 Volume 40 (M/E) 1856-59, Letters 1983 Volume 41 (M/E) 1860-64, Letters 1985 Volume 42 (M/E) 1864-68, Letters 1987 Volume 43 (M/E) 1868-70, Letters 1988 Volume 44 (M/E) 1870-73, Letters 1989 Volume 45 (M/E) 1874-79, Letters 1991 Volume 46 (M/E) 1880-83, Letters 1992 Volume 47 (E) 1883-86, Letters 1995 Volume 48 (E) 1887-90, Letters 2001 Volume 49 (E) 1890-92, Letters 2001 Volume 50 (E) 1892-95, Letters 2004
The MECW is not the complete works. The following material is available on MIA which is not included in the MECW:
Notes on Ricardo, Marx, 1845
Marx's Mathematical Manuscripts, 1881
Fragments on Literature and Art as well as some of the material in the
Biographical section and in the
International Workingmen's Association Section.
Apart from these, many of the most valued works of Marx and Engels were translated by Progress Publishers in the USSR and some other works by other publishers, and are in the public domain, and may be found in the Marx-Engels archive on marxists.org.