Johann Rudolf Rahn (1841–1912) is considered the father of Swiss art history and historical preservation. Our inventory contains 10,000 pages of his correspondence, which we have digitised and published on e-manuscripta.ch.

Ten years after the big retrospective marking the 100th anniversary of Rahn’s death, you can now help us transcribe and edit the letters using the e-manuscripta transcription tool. At the end, we will publish your work on the online platform.

The campagne is part of the strategic initiative Citizen Science by Zentralbibliothek Zürich.

Introduction

This video tutorial provides an introduction to the basics of the transcription tool on e-manuscripta.ch. 

This video tutorial provides an introduction to working with the e-manuscripta.ch editor.  

In the PDF file ‘Important principles for working with the new editor’, you will find further information on editing the raw transcriptions of Johann Rudolf Rahn's letters. 

Get started now

Click on the picture to start transcribing.

To be transcribed
Letter from Rahn to Robert Durrer, 19.1.1898

To be transcribed
Letter from Rahn to Heinrich Angst, 25 March 1893

To be transcribed
Letter from Rahn to Robert Durrer, 5 August 1893

To be transcribed
Letter from Rahn to Karl Bossard, 8.3.1897

Rahn’s correspondence

Jean Syndon-Faurie (Caniac-du-Causse 1869-Paris 1937), Karl Bossard, 1909, oil on canvas

Karl Bossard, 122 letters

The goldsmith Karl Bossard (1846–1914) ran an internationally renowned goldsmith’s workshop in Lucerne. He made art objects for European royal courts, private collectors overseas and museums in Switzerland and abroad. Bossard was awarded the Médaille d’Or at the Paris World Exhibition in 1889. Rahn’s letters show that he ordered mugs, bowls, platters, plates and spoons from Bossard for decades as gifts for his relatives and friends in clubs and societies.

To get started now:



Robert Breitinger (1841–1913), self-portrait, 1892, gelatin silver print, Zentralbibliothek Zürich, photo archive

Robert Breitinger-Wyder, 3 letters

Like Rahn, Robert Breitinger-Wyder was born in 1841. He died a year later than Rahn, in 1913. Breitinger was a heating engineer and stove manufacturer in Zurich. At the age of 45 he began to take photographs, as did many of Zurich’s bourgeoisie at that time. Between 1886 and 1910, he produced works in a detached, matter-of-fact style. They document a phase of active urban development in Zurich. The Zentralbibliothek’s photo archive preserves his estate, including about 4,000 glass negative plates and original photographic prints.




Heinrich Angst von Regensberg, canton Zurich. Director of the Swiss National Museum.

Heinrich Angst, 86 letters

Heinrich Angst (1847–1922), the first director of the Swiss National Museum, and the merchant Heinrich Zeller-Werdmüller (1844–1903) actively pursued the project of establishing a Swiss National Museum in Zurich. A major step in this direction was the National Exhibition in Zurich in 1883. Rahn served as an expert for the ‘Ancient Art’ group, for which Angst provided a series of glass paintings. Angst, Zeller-Werdmüller and Rahn tried to buy back Swiss glass paintings from abroad for the museum or to acquire them to prevent their sale abroad. This endeavour manifests itself in many different ways in their correspondence.

To get started now:



Robert Durrer, 1934

Robert Durrer, 57 letters

Rahn consulted Robert Durrer (1867–1934), who later became the Nidwalden cantonal archivist, at an early stage in his efforts to compile the ‘Statistics of Swiss Art Heritage’ for cantons Solothurn and Thurgau. This led to Rahn entrusting Durrer with the inventory for canton Unterwalden. Their correspondence documents this professional exchange between Rahn and Durrer. Durrer’s life’s work spanned three decades and comprised an extensive book that ultimately became the prototype for Switzerland’s volumes of art monuments and for which Rahn wrote the foreword in 1899.

To get started now:

Ranking

The ranking is updated regularly. Version dated: 22. April 2026

Username

Number of pages

Rüegger, Martin

144

Hinrichsen

35

Hunziker, Edith

23

Nuttli, Manuela

8

Foletti, Benedetta

6

Abegg, Regine

5

Hausheer, Yvonne

4

MR

4

Zweifel, Thomas

3

BS

3

NS

3

CB

2

CE

2

Koch-Wiegart, Annemarie

1

Rüdiger, Tim

1

sybik

1

Segieth-Wuelfert, Floria

1

Vogler, Vanessa

1

Wehrli-Johns, Martina

1


Total
248


Events

At two transcription workshops on 7 May and 8 October 2022 we selected and transcribed various letters between Rahn and key correspondents. Thanks to all those who took part!

Contact

Do you have any questions or comments about the campagne? Get in touch!