Alle de Brieven. The Collected Letters. Volume 3
Letters 43 [28] – 69 written between 1679 and 1682. Editor, A. Schierbeek.
The links below take you to the text of the letter in the original Dutch and in English translation from Alle de Brieven. The Collected Letters at the DBNL - De Digitale Bibliotheek voor de Nederlandse Letteren (Digital Library for Dutch Letters).
Cole's number, usually the same as Leeuwenhoek's, is in brackets. These are the numbers used by Dobell, who wrote before the Committee of Dutch Scientists began collecting and numbering all of the letters.
Letter 43 [28] of 25 April 1679
Letter 44 of 27 April 1679
Letter 45 of 11 May 1679
Letter 46 of 15 Mayi 1679
Letter 47 of 20 May 1679
Letter 48 of 13 June 1679
Letter 49 of 13 June 1679
Letter 50 of 11 July 1679
Letter 51 of 13 October 1679
Letter 52 of 14 November 1679
Letter 53 of 20 November 1679
Letter 54 [29] of 12 January 1680
Letter 55 of 16 January 1680
Letter 56 of 13 February1680
Letter 57 [30] of 5 April 1680
Letter 58 of 13 May 1680
Letter 59 of 13 May 1680
Letter 60 [31] of 13 May 1680
Letter 61 of 14 June 1680
Letter 62 [32] of 14 June 1680
Letter 63 of 9 August 1680
Letter 64 of 28 September 1680
Letter 65 [33] of 12 November 1680
Letter 66 [34] of 4 November 1681
Letter 67 [35] of (3) March 1682
Letter 68 [36] of 4 April 1682
Letter 69 of 28 July 1682