Say I want to restore it, clean it up, and publish a nice epub (using as source the PDF already linked in a comment here). Is it copyright infringement, or is its copyright expired now?
"112 gripes" was published in 1945, thus sites like https://www.biblio.com/blog/2010/07/how-to-determine-if-a-bo... suggest it's expired . But also, it was republished in the US in 2004 (ISBN 1-4191-6512-7). Does this make it "freshly-re-copyrighted until 2004 + 70 years?", or is the year that counts for copyright the original publishing date?
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(More general question: how can I check if a book is still copyrighted? Webpages like the one I linked above aren't very precise and leave room for interpretation; is there something easier / more canonical to use?)