Harry Leon Wilson was listed as one of the founders of the Fortean Society, though he was a late convert to the writer. Below is the only comment I've found by Wilson on Fort. It's from The Fortean, December 1943, p. 1
“I am today returning New Lands and am sending my copy of Lo! to an inquiring friend. Also I enclose a small contribution to the Cause.
Fort is highly exciting to me. I cannot share, as fellow host, quite all of what he somewhere speaks of as his ‘bizarre hospitalities,’ but I do greatly enjoy going to his parties.
In early infancy he seems to have been bitten by a rabid astronomer--and more venom to him.
As I go down into the vale of years I grow more and more suspicious of all certainties. Perhaps in another dozen years some one will be attacking Fort’s certainties and I’ll be for that guy, too.
A note from Milliken the other day--’99/100 of what is written on four dimensions is merely nonsense.’ It’s up to C.F. to take care of that minute reminder [sic]. With Einstein as the North Pole and Fort as the South, maybe we can get somewhere. I shall look forward to the next assault on old walls.”