The aforementioned resident of Arkham known as "Mr." Clemmons has now been confirmed to be the same Professor W. E. Clemmons of Miskatonic University. This video was recently uncovered among his work. I will keep you update as more information is released to me.
Professor W. E. Clemmons: https://www.facebook.com/Professor.W.E.Clemmons
Cthulhu Cult: https://www.facebook.com/realcthulhucult
Ephemeral Rift: https://www.facebook.com/ephemeralrift1
E.R.'s Twitter: https://twitter.com/EphemeralRift
E.R.'s ASMR Gaming channel: http://www.youtube.com/user/ephemeralriftgames
E.R. & Son's Gaming Channel: http://www.youtube.com/user/NuggetandFry