Frey, Johann Rudolf

The links to other persons were taken from the printed Index of NDB and ADB and additionally extracted by computational analysis and identification. The articles are linked in full-text version where possible. Otherwise the digital image is linked instead.

Localized places could be overlay each other depending on the zoo m level. In this case the shadow of the symbol is darker and the individual place symbols will fold up by clicking upon. A click on an individual place symbol opens a popup providing a link to search for other references to this place in the database.