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The indexing of the unprocessed digitized microfilms is work in progress. It is conducted, film by film, by members of the Wikipedia Projekt Pressearchiv in cooperation with ZBW. Some films are fully indexed, some only top-level, some not at all.
| Country/geo | German imperial colonies |
| Subject | Methods for exploring mineral resources and water, divining rod |
| superordinated | Mining |
| Signature | A11 : n12 Sm2.I |
| URI | https://pm20.zbw.eu/folder/sh/140960,145085 |
| ID | sh/140960,145085 |