Who wrote letters to Leeuwenhoek?

Of the no doubt thousands of letters Leeuwenhoek received over his adult life, very few have survived. Most of them are from officers of the Royal Society; copies are in its Letter Books Original. Some letters by Huygens, Heinsius, and Leibniz are preserved in Dutch and German archives. The letter by Bidloo was published at the time. Many of the letters, for example, those by Rabus, are available at the ePistolarium.

Letters from Magliabechi are known only from quotations in Rabus's Boekzaal van Europe. Those letters and many lost letters known only by reference in surviving letters are not included here, with the exception of Oldenburg's. None of them has survived but all are listed on Lens on Leeuwenhoek.

The letters are listed chronologically under What happened? below. On the list here, alphabetical by sender's last name, the dates for letters from England are Old Style; those for letters from Holland and Germany are New Style. However, on the Lens on Leeuwenhoek timeline, the dates for some of Oldenburg's letters use the New Style dates so that the conversation between them can be more easily followed.

Francis Aston

1683-02-16
1683-03-17
1683-03-23 ^
1683-10-01
1684-02-26

Govert Bidloo

1698-03-21

George Garden

1693-09-03 *

Benedictus Haan

1694-02-28 *

Edmond Halley

1686-03-02
1686-05-15

Anthonie Heinsius

1715-02-28 *

Robert Hooke

1677-12-01
1678-04-18
1682-03-10

Christiaan Huygens

1689-03-06
1690-03-06
1692-10-20 *

James Jurin

1722-02-22 *
1722-05-15 *
1722-12-24 *
1723-06-25 *

Gottfried Leibniz

1715-08-05 *
1715-10-29 *
1716-03-31 *
1716-09-26 * ^

Henry Oldenburg

1674-04-24
1674-08-20
1674-10-26
1674-12-24
1675-02-19
1675-04-12
1675-08-12
1675-12-28
1676-02-03
1676-05-04
1676-10-08
1676-10-16
1676-11-02
1677-02-12
1677-02-22
1677-04-10
1677-07-28

Peter Rabus

1693-08-18
1696-05-16
1696-07-30

Hans Sloane

1700-05-28 *
1701-09-27 *
1701-11-18 *
1713-10-13 *

Richard Waller

1692-02-02 *
1693-04-28 *
1694-01-31 *
1694-04-22 ^
1714-02-20 ^
1714-07-08
1714-08-19

Notes

Only the letters marked * are in Alle de Brieven / Collected Letters.

The letters marked ^ are not yet on Lens on Leeuwenhoek.