The wing design is also part of the imagery of memphis and mitzream a supposed high order sometimes called clandestine depending on the credentials or whatnot. You see a lot of overlap of these over 33 degree orders and things like the oto and other orders like order of the vampyre things that seem made up.
This brings me back to epstein. The temple clearly is egyptian so could he be affiliated with either the rite of memphis and misraim or the rosicrucians?maybe both?