cc-by-4.0Ojanen, Mikko2025-03-242019-12-242019-12-24https://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/9882The spreadsheet consists of notes about the appearances of Digelius Electronics Finland in the historical documentary evidence depicting the rise and fall of the company. Digelius Electronics Finland was a Finnish small scale industry engineering company initially founded to design and build Erkki Kurenniemi's electronic musical instruments. The data set produced as a part of the PhD project "User Stories of Erkki Kurenniemi’s Electronic Musical Instruments" by the author. PI and contact information: Mikko Ojanen / https://orcid.org/0000-0002-7833-9659OpenDigelius Electronics FinlandDEFDigital Musical Instrument DesignFinland1970sKurenniemi, Erkkidataset