You can have a look on the book which is also online:
Caroline Y. Robertson-von Trotha, Ralf H. Schneider (Hg.) unter Mitarbeit von Christine Wölfle: Digitales Kulturerbe. Bewahrung und Zugänglichkeit in der wissenschaftlichen Praxis (= Kulturelle Überlieferung - digital 2). Karlsruhe: KIT Scientific Publishing, 2015, S. 81-96. (http://www.zak.kit.edu/2643.php)
There are examples, also from the Behring archives in Marburg, Germany, in my paper.