I went back through some of the resources that Dr. Supervisor sent me, while I was trying to write a difficult part of this Chapter That Won't Die. It turned out that one of the sites that he sent me had a link to a site I'd never encountered before, which had scanned images of all the relevant newspaper articles about different German historical figures from the 20th century. This means: a.) it had a bunch of stuff that I already found and scanned when I was doing microfilm research, but b.) it also had a bunch of stuff from newspapers I haven't had a chance to see yet.
And that's how I ended up spending the rest of my afternoon squinting at old German typeface (because the non-Berlin newspapers were still using this until long after 1933):