Aieee! I suppose "favorable" conditions would be when a fake seance is happening in a dark room while a confederate goes through your pockets. Infinite Intelligence indeed!
Original Postcard No Date Fort Wayne Spiritual Science Church Collection Jim Linderman
Book and Ebook Catalog is HERE
"I went onto Google Earth and found the old building, and see that it is scheduled to be demolished. But it has been home to the same type of church, with its principle dogma intact, all this time."
A shame...I'd live in that building.
Paul Lyon has written a serialized novel which you may see portions of HERE