An initial focus for the e-rara.ch project which includes material from all over Switzerland comprises Swiss prints from the 16th century. These play an important role in the history of ideas in Europe and especially in the history of the Reformation. The digitization is being coordinated with the VD 16-1 digital and VD16-2 digital projects (Bavarian State Library in Munich).

This material from the ETH-Bibliothek covers the fields of the history of astronomy, theoretical and practical astronomy, astrophysics, planets in the solar system, stellar astronomy, chronology and calendariography, nautical science, geodesy, international surveying, topography and cartography.

Selected works on architectural theory, the history of architecture, garden architecture, urban planning, construction skills and the history of art, from the stock of the ETH-Bibliothek.

As an important part of the holdings of the ETH-Bibliothek this collection includes the subjects of mathematics, geometry, weights and measures, physics and meteorology.