First, early on in Covid times, David and Daniel Ritter released The Visual History of Science Fiction Fandom, Volume One: The 1930s. This came out as a lavish (and expensive) hardcover, since reprinted, but also as an affordable Kindle ebook. I can't say enough of praise for this book, so will recommend a visit to the publisher's webpage here, where you can also click on a digital sampler of some 52 pages from the book. What a picture of fandom in the 1930s!
Snuggly Books has published the second volume (of two) of fiction by Montague Summers, The Bride of Christ and Other Fictions, including eight stories, all but one of which are newly published. Introduction by Daniel Corrick.see here. There is also a companion volume of stories by Maurice Renard, Celui qui n'a pas tué, edited and with a preface and bibliography by Claude Deméocq. Ordering information for both books (and many others) can be found by scrolling around here.