What's the copyright situation of this book? 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 (IS…
Any changes (spelling, typos, the typesetting) in the new publication would be under a new copyright term. In practice, if you make your copy from the earlier out of copyright edition then you're fine. (Assuming you are correct that the earlier edition is truly out of copyright)