I recently read a book about "The Lost Journalism of Ring Lardner" which happened to reproduce and quote a number of Lardner's poems that were not mentioned in the bibliography that I used when originally researching and producing the Ring Lardner poetry omnibus. The book cited the original publication date and source, and all of them originated from the Chicago Tribune in the 1920s. Since the Chicago Tribune is very well-represented on Archive.org, they are almost certainly all there in a demonstrably public domain scan. I also have recently tracked down scans of some poems that had been on the research spreadsheet at the time of original publication, but that I couldn't find scans for at the time.
I'm trying to avoid scope-creeping the project into absurdity as he wrote for the Chicago tribune daily for several years, and I don't want to read thousands of issues to track down every ephemeral limerick that he ever wrote, but I do think works that have been cited by secondary scholarly sources are probably worth inclusion even though I didn't know about them the first time around.
Basically my question here is, would it be OK for me to submit a PR to add these new poems that I've tracked down, or do we want to consider the already-published omnibus to be "done"? If we decide that we don't want to add all of it, do we at least want to add the things that I was aware of existing at the time of original publication but simply hadn't yet found suitable scans for?