From 1869-01-04 To 1869-03-05
- Cupples, George to Darwin, C. R. 4 Jan 1869
- Orton, James to Darwin, C. R. 4 Jan 1869
- Darwin, C. R. to Carus, J. V. 5 Jan 1869
- Darwin, C. R. to Nilsson, Sven 5 Jan 1869
- Darwin, C. R. to Cupples, George [6–9? Jan 1869]
- Maw, George to Darwin, C. R. 9 Jan 1869
- Cupples, George to Darwin, C. R. 11 Jan 1869
- Müller, J. F. T. to Darwin, C. R. 12 Jan 1869
- Becker, L. E. to Darwin, C. R. 13 Jan 1869
- Darwin, C. R. to Hooker, J. D. 13 Jan 1869
- Darwin, C. R. to Maw, George 13 Jan 1869
- Hooker, J. D. to Darwin, C. R. 14 [Jan] 1869
- Maw, George to Darwin, C. R. 14 Jan 1869
- Cupples, George to Darwin, C. R. 15 Jan 1869
- Farrer, T. H. to Darwin, C. R. 15 Jan 1869
- Hooker, J. D. to Darwin, C. R. 15 Jan 1869
- Darwin, C. R. to Hooker, J. D. 16 Jan [1869]
- Darwin, C. R. to Maw, George 17 Jan [1869]
- Reade, W. W. to Darwin, C. R. 17 Jan 1869
- Hooker, J. D. to Darwin, C. R. 18 Jan 1869
- Wallace, A. R. to Darwin, C. R. 20 Jan 1869
- Cupples, George to Darwin, C. R. 21 Jan 1869
- Darwin, C. R. to Bridgman, W. K. 21 Jan [1869]
- Darwin, C. R. to Somerville, M. F. G. 21 Jan [1869]
- Masters, M. T. to Darwin, C. R. 21 Jan 1869
- Carus, J. V. to Darwin, C. R. 22 Jan 1869
- Darwin, C. R. to Hooker, J. D. [22 Jan 1869]
- Darwin, C. R. to Wallace, A. R. 22 Jan [1869]
- Bridgman, W. K. to Darwin, C. R. 23 Jan 1869
- Darwin, C. R. to Orton, James 23 Jan [1869]
- Claus, C. F. to Darwin, C. R. 24 Jan 1869
- Darwin, C. R. to Eyton, T. C. 24 Jan 1869
- McNeill, Archibald to Darwin, C. R. 24 Jan 1869
- Hooker, J. D. to Darwin, C. R. [25 Jan 1869]
- Eyton, T. C. to Darwin, C. R. 26 Jan [1869]
- Tait, W. C. to Darwin, C. R. 26 Jan 1869
- Darwin, C. R. to Phillips, John 27 Jan 1869
- Darwin, C. R. to Claus, C. F. 28 Jan 1869
- Forbes, David to Darwin, C. R. 30 Jan 1869
- Wallace, A. R. to Darwin, C. R. 30 Jan 1869
- Darwin, C. R. to Croll, James 31 Jan [1869]
- Darwin, C. R. to Kippist, Richard 31 Jan [1869]
- Darwin, W. E. to Darwin, C. R. [Jan 1869]
- Haussoullier, C. P. to Darwin, C. R. 31 Jan 1869
- Appleton, D. & Co. to Gray, Asa 1 Feb 1869
- Bate, C. S. to Darwin, C. R. 1 Feb 1869
- Darwin, C. R. to Robinson, J. W. 1 Feb 1869
- Merrell, S. A. to Darwin, C. R. 1 Feb 1869
- Carus, J. V. to Darwin, C. R. 2 Feb 1869
- Darwin, C. R. to Tait, W. C. 2 Feb [1869]
- Darwin, C. R. to Wallace, A. R. 2 Feb [1869]
- Ramsay, A. C. to Darwin, C. R. 2 Feb 1869
- Darwin, C. R. to Murray, John (b) [1–3 Feb 1869]
- Darwin, C. R. to Ramsay, A. C. 3 Feb [1869]
- Murray, John (b) to Darwin, C. R. 3 Feb [1869]
- Croll, James to Darwin, C. R. 4 Feb 1869
- Darwin, C. R. to Carus, J. V. 5 Feb 1869
- Darwin, C. R. to Tegetmeier, W. B. 5 Feb [1869]
- Hartsen, F. A. von to Darwin, C. R. 5 Feb 1869
- Claus, C. F. to Darwin, C. R. 6 Feb 1869
- Darwin, C. R. to Croll, James 6 Feb [1869]
- Darwin, C. R. to Darwin, G. H. 6 Feb [1869]
- Darwin, G. H. to Darwin, C. R. 6 Feb 1869
- Darwin, C. R. to Forbes, David 7 Feb [1869]
- Lubbock, John to Darwin, C. R. 8 Feb 1869
- Recht, Georg to Darwin, C. R. 9 Feb 1869
- Malven, F. M. to Darwin, C. R. 12 Feb [1869]
- Wilson, Edward to Darwin, C. R. 12 Feb 1869
- Lubbock, John to Darwin, C. R. 13 Feb [1869]
- Darwin, G. H. to Darwin, C. R. 14 Feb 1869
- Croll, James to Darwin, C. R. 15 Feb 1869
- Moulinié, J. J. to Darwin, C. R. 15 Feb 1869
- Darwin, C. R. to Meteyard, Eliza [18 Feb 1869]
- Egerton, P. M. G. to Darwin, C. R. 18 Feb 1869
- Faivre, Ernest to Darwin, C. R. 18 Feb 1869
- Thiel, Hugo to Darwin, C. R. 18 Feb 1869
- Meteyard, Eliza to Darwin, C. R. 19 Feb 1869
- Tait, W. C. to Darwin, C. R. 19 Feb 1869
- McNeill, Archibald to Darwin, C. R. 20 Feb 1869
- Cooke, R. F., John Murray, Publishers to Darwin, C. R. 22 Feb 1869
- Darwin, C. R. to Cooke, R. F., (John Murray, Publishers) [22 Feb 1869]
- Darwin, C. R. to Moulinié, J. J. 22 Feb [1869]
- Henslow, George to Darwin, C. R. 22 Feb 1869
- Cooke, R. F., John Murray, Publishers to Darwin, C. R. 23 Feb 1869
- Darwin, C. R. to Cooke, R. F. 23 [Feb 1869]
- Darwin, G. H. to Darwin, C. R. [23 Feb 1869]
- Darwin, C. R. to Croll, James 24 Feb [1869]
- Darwin, C. R. to Tait, W. C. 24 Feb 1869
- Holland, Henry to Darwin, E. A. 24 Feb [1869]
- Darwin, C. R. to Tegetmeier, W. B. 25 Feb [1869]
- Darwin, C. R. to Thiel, Hugo 25 Feb 1869
- King, P. G. to Darwin, C. R. 25 Feb 1869
- Bate, C. S. to Darwin, C. R. 1 Mar 1869
- Blyth, Edward to Darwin, C. R. 1 Mar 1869
- Tait, W. C. to Darwin, C. R. 2 Mar 1869
- Darwin, C. R. to Stebbing, T. R. R. 3 Mar 1869
- Eyton, T. C. to Darwin, C. R. 4 Mar 1869
- Darwin, C. R. to Wallace, A. R. 5 Mar [1869]
- Stebbing, T. R. R. to Darwin, C. R. 5 Mar 1869
- Tait, W. C. to Darwin, C. R. 5 Mar 1869