Deletion of Hebdo-

Comment: I have expanded and copy-edited the article somewhat, rewording some potentially misleading statements and putting the prefix in its historic context. I have also added a bunch of sources I was able to find in short time, including some high quality . I am not aware of any untrue statements in the article. Two historical sources clearly document the international usage of the prefix in the meaning of 10^7 in the 1880s and 1890s among scientists. This already warrants an article about it, and it's clear that more sources must exist. As usual with historical contents, most of it does not show up in Google - but Wikipedia is not a collection of today's mainstream knowledge, but aims to document and put into context the knowledge of the world, past and present. So, for historical topics, you typically have to dig deeper and search for sources in libraries and museums. This, however, may take time (sometimes years) and effort, so it would be unwise to delete an article with possibilities just because it is still developing. I for one would definitely like to learn more about the history of the prefix, much more than what could be put into another article only mentioning the prefix. In fact, I think, (after my recent edits) the article already has more info than what could be put into f.e. the metric prefix article without creating undue weight there, so it seems like a good idea to keep the info in a separate article with a focus on this particular prefix only
Stance: keep
Cited policy: Wikipedia:Reliable sources (WP:RS)