The letters written by and to scientist Carl von Linné (Carl Linnaeus)
in the Swedish Diachronic Corpus were originally published by Uppsala
University, and made digitally available via Project Runeberg
(http://runeberg.org). The collection includes about 5,000 letters to
public authorities, to Kungliga Vetenskapssocieteten i Uppsala (Royal
Society of Sciences, Uppsala), to Kungliga Vetenskapsakademien (Royal
Swedish Academy of Sciences), to and from Swedish people, as well as
to and from non-Swedish people (in Latin).  


If you want to know more about the Swedish Diachronic Corpus, the
following SweClarin reports may be of interest: 

SCR-03-2019
Towards a Swedish diachronic corpus: Intended content, structure and format of version 1.0
Eva Pettersson & Lars Borin
url: https://sweclarin.se/sites/sweclarin.se/files/outline-swedish-corpus.pdf

SCR-02-2019
Swedish diachronic texts: Resources and user needs to consider in a Swedish diachronic corpus
Eva Pettersson & Lars Borin
url: https://sweclarin.se/sites/sweclarin.se/files/swedish-historical-texts_3.pdf

SCR-01-2019
Characteristics of diachronic and historical corpora: Features to consider in a Swedish diachronic corpus
Eva Pettersson & Lars Borin
url: https://sweclarin.se/sites/sweclarin.se/files/diachronic-corpora-sweclarin-v3.pdf