Contents

1. Preface
2. 1864
   1. 1. Marx to Carl Klings. 4 October
   2. 2. Marx to Sophie von Hatzfeldt. 16 October
   3. 3. Marx to Engels. 2 November
   4. 4. Engels to Marx. 2 November
   5. 5. Engels to Hermann Engels. 2 November
   6. 6. Marx to Engels. 4 November
   7. 7. Engels to Marx. 7 November
   8. 8. Engels to Marx. 9 November
   9. 9. Marx to Engels. 14 November
   10. 10. Engels to Marx. 16 November
   11. 11. Marx to Engels. 18 November
   12. 12. Engels to Marx. 22 November
   13. 13. Marx to Engels. 24 November
   14. 14. Marx to Sophie von Hatzfeldt. 24 November
   15. 15. Engels to Joseph Weydemeyer. 24 November
   16. 16. Marx to Engels. 25 November
   17. 17. Marx to Sophie von Hatzfeldt. 26 November
   18. 18. Marx to Sophie von Hatzfeldt. 28 November
   19. 19. Marx to Joseph Weydemeyer. 29 November
   20. 20. Marx to Ludwig Kugelmann. 29 November
   21. 21. Marx to Lion Philips. 29 November
   22. 22. Marx to Engels. 2 December
   23. 23. Marx to Engels. 8 December
   24. 24. Marx to Engels. 10 December
   25. 25. Marx to Engels. 22 December
   26. 26. Marx to Sophie von Hatzfeldt. 22 December
   27. 27. Marx to Carl Siebel. 22 December
3. 1865
   1. 28. Marx to Hermann Jung. About 8 January
   2. 29. Engels to Rudolf Engels. 10 January
   3. 30. Marx to His Daughter Jenny. 11 January
   4. 31. Marx to Johann Baptist von Schweitzer. 16 January
   5. 32. Marx to Engels. 25 January
   6. 33. Engels to Marx. 27 January
   7. 34. Marx to Engels. 30 January
   8. 35. Marx to Engels. 1 February
   9. 36. Marx to Engels. 3 February
   10. 37. Engels to Marx. 5 February
   11. 38. Marx to Engels. 6 February
   12. 39. Engels to Marx. 7 February
   13. 40. Engels to Marx. 9 February :
   14. 41. Marx to Engels. 10 February
   15. 42. Marx to Engels. 11 February
   16. 43. Engels to Marx. 13 February
   17. 44. Marx to Engels. 13 February
   18. 45. Marx to Victor Le Lubez. 15 February
   19. 46. Marx to Engels. 16 February
   20. 47. Marx to Engels. 18 February
   21. 48. Engels to Marx. 20[-21] February
   22. 49. Engels to Marx. 22 February
   23. 50. Marx to Engels. Before 22 February
   24. 51. Engels to Otto Meissner. 22 February
   25. 52. Marx to Wilhelm Liebknecht. 23 February
   26. 53. Marx to Ludwig Kugelmann. 23 February
   27. 54. Engels to Marx. 24 February
   28. 55. Marx to Engels. 25 February
   29. 56. Engels to Carl Siebel. 27 February Ill 57. Engels to Marx. 27 February
   30. 58. Engels to Marx. 3 March
   31. 59. Marx to Engels. 4 March
   32. 60. Engels to Marx. 6 March
   33. 61. Marx to Engels. 7 March
   34. 62. Marx to Engels. 10 March
   35. 63. Engels to Joseph Weydemeyer. 10 March
   36. 64. Engels to Marx. 11 March
   37. 65. Marx to Engels. 13 March
   38. 66. Marx to Hermann Jung. 13 March
   39. 67. Engels to Marx. 14 March
   40. 68. Marx to Engels. 18 March
   41. 69. Engels to Friedrich Albert Lange. 29 March
   42. 70. Marx to Sophie von Hatzfeldt. 10 April
   43. 71. Marx to Engels. 11 April
   44. 72. Engels to Marx. 12 April
   45. 73. Marx to Hermann Jung. 13 April .'.
   46. 74. Marx to Léon Fontaine. 15 April
   47. 75. Engels to Marx. 16 April
   48. 76. Marx to Engels. 22 April
   49. 77. Marx to Hermann Jung. 25 April
   50. 78. Marx to Engels. 1 May
   51. 79. Engels to Marx. 3 May
   52. 80. Marx to Engels. 9 May
   53. 81. Engels to Marx. 12 May
   54. 82. Marx to Engels. 13 May
   55. 83. Marx to Engels. 20 May
   56. 84. Marx to Wilhelm Liebknecht. About 25 May
   57. 85. Marx to Engels. 24 June
   58. 86. Marx to Wilhelm Liebknecht. 24 June
   59. 87. Marx to Eleanor Marx. 3 July
   60. 88. Engels to Marx. 15 July
   61. 89. Engels to Marx. 25 July
   62. 90. Marx to Léon Fontaine. 25 July
   63. 91. Marx to Engels. 31 July
   64. 92. Marx to Engels. 5 August
   65. 93. Engels to Marx. 7 August
   66. 94. Marx to Engels. 9 August
   67. 95. Engels to Marx. 16 August
   68. 96. Marx to Engels. 19 August
   69. 97. Engels to Marx. 21 August
   70. 98. Marx to Engels. 22 August
   71. 99. Marx to Wilhelm Liebknecht. 11 September
   72. 100. Marx to Wilhelm Liebknecht. 20 September
   73. 101. Engels to Wilhelm Liebknecht. 21 September
   74. 102. Marx to Hermann Jung. 30 September
   75. 103. Engels to Marx. 4 October
   76. 104. Marx to Engels. 19 October
   77. 105. Marx to Engels. 8 November
   78. 106. Marx to Salomon Fuld. 9 November
   79. 107. Engels to Marx. 13 November
   80. 108. Marx to Engels. 15 November
   81. 109. Marx to Hermann Jung. 15 November
   82. 110. Engels to Marx. 17 November
   83. 111. Marx to Engels. 20 November
   84. 112. Marx to Hermann Jung. 20 November
   85. 113. Marx to Wilhelm Liebknecht. 21 November
   86. 114. Marx to César De Paepe. About 25 November
   87. 115. Engels to Marx. 1 December
   88. 116. Marx to Engels. 2 December
   89. 117. Marx to Engels. 26 December
   90. 118. Marx to Engels. End of 1865-beginning of 1866
4. 1866
   1. 119. Engels to Marx. 4 January
   2. 120. Marx to Engels. 5 January
   3. 121. Marx to Johann Philipp Becker. About 13 January
   4. 122. Marx to Engels. 15 January
   5. 123. Marx to Wilhelm Liebknecht. 15 January
   6. 124. Marx to Ludwig Kugelmann. 15 January
   7. 125. Marx to Sigfrid Meyer. 24 January
   8. 126. Engels to Marx. 26 January
   9. 127. Marx to Engels. 10 February
   10. 128. Engels to Marx. 10 February
   11. 129. Marx to Engels. 13 February
   12. 130. Marx to Engels. 14 February
   13. 131. Marx to Friedrich Lessner. 14 February
   14. 132. Engels to Marx. 19 February
   15. 133. Marx to Engels. 20 February :
   16. 134. Engels to Marx. 22 February
   17. 135. Marx to Engels. 2 March
   18. 136. Engels to Marx. 5 March
   19. 137. Marx to Engels. 6 March
   20. 138. Engels to Marx. About 10 March
   21. 139. Marx to Engels. 10 March
   22. 140. Marx to Engels. 15 March
   23. 141. Marx to Engels. 16 March
   24. 142. Marx to His Daughter Jenny. 16 March
   25. 143. Marx to Antoinette Philips. 18 March
   26. 144. Marx to Laura Marx. 20 March
   27. 145. Engels to Hermann Engels. 22 March
   28. 146. Marx to Engels. 24 March
   29. 147. Engels to Marx. 27 March
   30. 148. Marx to Engels. 2 April
   31. 149. Engels to Marx. 2 April
   32. 150. Engels to Marx. 6 April
   33. 151. Marx to Engels. 6 April
   34. 152. Engels to Hermann Engels. 6 April
   35. 153. Marx to Wilhelm Liebknecht. 6 April
   36. 154. Marx to Ludwig Kugelmann. 6 April
   37. 155. Engels to Marx. 10 April
   38. 156. Engels to Marx. 13 April
   39. 157. Marx to Engels. 23 April
   40. 158. Engels to Marx. 1 May
   41. 159. Marx to Wilhelm Liebknecht. 4 May
   42. 160. Engels to Marx. 9 May
   43. 161. Marx to Engels. 10 May
   44. 162. Engels to Marx. 16 May
   45. 163. Marx to Engels. 17 May
   46. 164. Engels to Marx. 25 May
   47. 165. Marx to Engels. 7 June
   48. 166. Marx to Engels. 9 June
   49. 167. Engels to Marx. 11 June
   50. 168. Marx to Engels. 20 June
   51. 169. Engels to Marx. 4 July
   52. 170. Marx to Engels. 7 July
   53. 171. Engels to Marx. 9 July
   54. 172. Engels to Marx. 12 July
   55. 173. Marx to Engels. 21 July
   56. 174. Engels to Marx. 25 July ;
   57. 175. Marx to Engels. 27 July
   58. 176. Engels to Marx. 6 August
   59. 177. Marx to Engels. 7 August
   60. 178. Engels to Marx. 10 August
   61. 179. Marx to Paul Lafargue. 13 August
   62. 180. Marx to Engels. 13 August
   63. 181. Marx to Engels. 23 August
   64. 182. Marx to Ludwig Kugelmann. 23 August
   65. 183. Engels to Emil Engels. 23 August
   66. 184. Marx to Laura Marx. 28 August
   67. 185. Marx to Johann Philipp Becker. 31 August
   68. 186. Marx to Eleanor Marx. 5 September
   69. 187. Marx to Laura Marx. About 8 September
   70. 188. Marx to Engels. 26 September
   71. 189. Marx to Engels. 1 October
   72. 190. Engels to Marx. 2 October
   73. 191. Marx to Engels. 3 October
   74. 192. Engels to Marx. 5 October
   75. 193. Marx to Ludwig Kugelmann. 9 October
   76. 194. Marx to Ludwig Kugelmann. 13 October
   77. 195. Marx to Ludwig Kugelmann. 25 October
   78. 196. Marx to Engels. 8 November
   79. 197. Marx to Engels. 10 November
   80. 198. Engels to Marx. 11 November
   81. 199. Marx to François Lafargue. 12 November
   82. 200. Marx to Paul Lafargue. 7 December
   83. 201. Marx to Engels. 8 December
   84. 202. Engels to Marx. 14 December
   85. 203. Marx to Engels. 17 December
   86. 204. Engels to Marx. 21 December
   87. 205. Marx to Engels. 31 December
5. 1867
   1. 206. Marx to Engels. 19 January
   2. 207. Engels to Marx. 29 January
   3. 208. Marx to Ludwig Kugelmann. 18 February
   4. 209. Marx to Engels. 21 February
   5. 210. Marx to Engels. 25 February
   6. 211. Engels to Marx. 13 March
   7. 212. Marx to Engels. 2 April:
   8. 213. Engels to Marx. 4 April
   9. 214. Marx to Engels. 13 April
   10. 215. Marx to Ludwig Kugelmann. 16 April
   11. 216. Marx to Johann Philipp Becker. 17 April
   12. 217. Marx to Engels. 24 April
   13. 218. Engels to Marx. 27 April
   14. 219. Marx to Sigfrid Meyer. 30 April
   15. 220. Marx to Ludwig Büchner. 1 May
   16. 221. Marx to His Daughter Jenny. 5 May
   17. 222. Marx to Engels. 7 May
   18. 223. Marx to Laura Marx. 13 May
   19. 224. Marx to Engels. About 22 May
   20. 225. Marx to Engels. 3 June
   21. 226. Marx to Ludwig Kugelmann. 10 June
   22. 227. Engels to Marx. 16 June
   23. 228. Marx to Engels. 22 June
   24. 229. Engels to Marx. 24 June
   25. 230. Engels to Marx. 26 June
   26. 231. Marx to Engels. 27 June
   27. 232. Marx to Engels. 27 June
   28. 233. Marx to Ludwig Kugelmann. 13 July
   29. 234. Marx to Engels. 20 July
   30. 235. Marx to Ferdinand Freiligrath. 20 July
   31. 236. Marx to Engels. 10 August
   32. 237. Engels to Marx. 11 August
   33. 238. Marx to Engels. 14 August
   34. 239. Marx to London Bookseller. 14 August
   35. 240. Engels to Marx. 15 August
   36. 241. Marx to Engels. 16 August
   37. 242. Engels to Marx. 23 August
   38. 243. Marx to Engels. 24 August
   39. 244. Engels to Marx. 26 August
   40. 245. Engels to Marx. 27 August
   41. 246. Marx to Auguste Vermorel. 27 August
   42. 247. Marx to Sigfrid Meyer. 27 August
   43. 248. Marx to Engels. 31 August
   44. 249. Engels to Marx. 1 September
   45. 250. Engels to Marx. 2 September
   46. 251. Marx to Engels. 4 September
   47. 252. Marx to Engels. 7 September
   48. 253. Engels to Marx. 9 September
   49. 254. Marx to Engels. 11 September
   50. 255. Engels to Marx. 11 September
   51. 256. Marx to Engels. 12 September
   52. 257. Marx to Engels. 12 September
   53. 258. Engels to Marx. 12 September
   54. 259. Marx to Engels. 13 September
   55. 260. Engels to Laura Marx. 23 September
   56. 261. Marx to Engels. 4 October
   57. 262. Engels to Marx. 8 October
   58. 263. Marx to Engels. 9 October
   59. 264. Marx to Engels. 10 October
   60. 265. Engels to Marx. 11 October
   61. 266. Marx to Ludwig Kugelmann. 11 October
   62. 267. Engels to Ludwig Kugelmann. 12 October
   63. 268. Engels to Marx. 13 October
   64. 269. Marx to Engels. 14 October
   65. 270. Engels to Marx. 15 October
   66. 271. Marx to Ludwig Kugelmann. 15 October
   67. 272. Engels to Marx. 18 October
   68. 273. Engels to Hermann Meyer. 18 October
   69. 274. Marx to Engels. 19 October
   70. 275. Engels to Marx. 22 October
   71. 276. Engels to Marx. 1 November
   72. 277. Marx to Engels. 2 November
   73. 278. Engels to Marx. 5 November
   74. 279. Marx to Engels. 7 November
   75. 280. Engels to Marx. 8 November
   76. 281. Engels to Ludwig Kugelmann. 8 and 20 November
   77. 282. Marx to Engels. 9 November
   78. 283. Engels to Marx. 10 November
   79. 284. Marx to Carl Siebel. 10 November
   80. 285. Marx to Engels. 14 November
   81. 286. Engels to Marx. 24 November
   82. 287. Engels to Marx. 26 November
   83. 288. Marx to Engels. 27 November
   84. 289. Marx to Engels. 28 November
   85. 290. Engels to Marx. 28 November
   86. 291. Engels to Hermann Engels. 28 November
   87. 292. Marx to Engels. 29 November
   88. 293. Marx to Engels. 29 November
   89. 294. Engels to Marx. 29 November
   90. 295. Marx to Engels. 30 November
   91. 296. Marx to Victor Schily. 30 November
   92. 297. Marx to Ludwig Kugelmann. 30 November
   93. 298. Engels to Marx. 4 December
   94. 299. Engels to Marx. 6 December
   95. 300. Marx to Engels. 7 December
   96. 301. Marx to Engels. 7 December
   97. 302. Marx to Ludwig Kugelmann. 7 December
   98. 303. Engels to Marx. 12 December
   99. 304. Engels to Ludwig Kugelmann. 12 December
   100. 305. Engels to Ludwig Kugelmann. 13 December
   101. 306. Marx to Engels. 14 December
   102. 307. Engels to Marx. 16 December
   103. 308. Marx to Engels. 17 December
   104. 309. Engels to Marx. 19 December
6. 1868
   1. 310. Marx to Engels. 3 January
   2. 311. Engels to Jenny Marx. 3 January
   3. 312. Engels to Marx. 6 January
   4. 313. Engels to Marx. 7 January
   5. 314. Marx to Engels. 8 January
   6. 315. Marx to Engels. 8 January
   7. 316. Engels to Marx. 10 January
   8. 317. Marx to Engels. 11 January
   9. 318. Marx to Ludwig Kugelmann. 11 January
   10. 319. Engels to Marx. 16 January
   11. 320. Engels to Marx. 23 January
   12. 321. Marx to Engels. 25 January
   13. 322. Marx to Ludwig Kugelmann. 30 January
   14. 323. Marx to Engels. 1 February
   15. 324. Engels to Marx. 2 February
   16. 325. Marx to Engels. 4 February
   17. 326. Engels to Marx. 11 February
   18. 327. Marx to Engels. 15 February
   19. 328. Marx to Engels. 20 February
   20. 329. Engels to Marx. 20 February
   21. 330. Engels to Marx. 1 March
   22. 331. Marx to Engels. 4 March
   23. 332. Marx to Engels. 6 March
   24. 333. Marx to Ludwig Kugelmann. 6 March
   25. 334. Engels to Marx. 10 March
   26. 335. Engels to Marx. 13 March
   27. 336. Marx to Engels. 14 March
   28. 337. Marx to Engels. 16 March
   29. 338. Engels to Marx. 17 March
   30. 339. Marx to Ludwig Kugelmann. 17 March
   31. 340. Marx to Engels. 18 March
   32. 341. Engels to Marx. 19 March
   33. 342. Marx to Engels. 23 March
   34. 343. Marx to Engels. 25 March
   35. 344. Engels to Marx. 29 March
7. Appendices
   1. 1. Jenny Marx to Engels. Not before 29 November 1864
   2. 2. Jenny Marx to Engels. 30 March 1865
   3. 3. Karl Marx. Confession. 1 April 1865
   4. 4. Jenny Marx to Johann Philipp Becker. 29 January 1866
   5. 5. Jenny Marx to Sigfrid Meyer. Beginning of February 1866
   6. 6. Jenny Marx to Ludwig Kugelmann. 26 February 1866
   7. 7. Jenny Marx to Ludwig Kugelmann. 1 April 1866
   8. 8. Jenny Marx to Engels. 24 December 1866
   9. 9. Jenny Marx to Johann Philipp Becker. 5 October 1867
   10. 10. Jenny Marx to Ludwig Kugelmann. 24 December 1867
   11. 11. Jenny Marx to Johann Philipp Becker. After 10 January 1868
   12. 12. Laura Marx to Engels. 13 January 1868
8. NOTES AND INDEXES
   1. Notes
   2. Name Index
   3. Index of Quoted and Mentioned Literature
   4. Index of Periodicals
   5. Subject Index