MarzAat has a new review of The Fortean Influence on Science Fiction: Charles Fort and the Evolution of the Genre (2020). He adds a list of titles and authors not covered by the book.
Incidentally I see that MarzAat maintains a linked list of “World War One in Fantastic Fiction”. Related in terms of the time period is a new Cultural Review essay on “Bolshevism and Anarchy”, which considers Lovecraft’s “The Street” in context.
Also, the latest Fafnir: Nordic Journal of Science Fiction and Fantasy Research has a new long review of Weird Talers: Essays on Robert E. Howard and Others (2019).