Recent acquisitions

The oldest scientific description of a viable flying machine

The oldest periodical dedicated to plastics technology

A treatise on the mathematics of natural river dynamics by Hadaly de hada

The railway bridge over the Aare near Busswyl on the Bernese state railway between Bern and Biel

"Beschreibung Der Exulanten- und Bergstadt Johann Georgen Stadt"

Guide through the ironworks Unterwellenborn near Saalfeld a. d. Saale

From product catalogs and other "gray" treasures

Oder: Anleitung zu denen Brunnenkünsten

A monumental work of bridge building in Quebec

"Närrische Weißheit Und Weise Narrheit"

"A History of the International Institute of Welding 1947-1990"

"Der Kautschuk und seine Quellen"

The periodicals "Men and Foundry" and "Foundry of Today"

"Nouvelle invention de lever l’eau plus haut que sa source [...]"

"J. Gabriel Drechslers Curiöser und lesenswürdiger Tractat von Goldmachen"