These writings are here for their historical value. Please do as Scripture exhorts and test all things no matter who wrote it! “Prove all things; hold fast that which is good.” (1 Thes. 5:21)
I don’t know who this “Philo Logos” was and I could only find any of his writings in the first few editions of the Signs of the Times. I don’t know if this was his real name or a pen-name but I hope that you enjoy these writings as much as I have. – Tom
P.S., There was a tenth correspondence according to the index in Volume 2, but unfortunately it wasn’t available in the copy that I had access to.