I received the above letters from Vance Harlow. Here is what he wrote when he sent them. I guess it would take the word of God for some of the inspectors to follow the regulations.
"Here's one letter. Its a bit old but I reconfirmed with Hattie
recently that it is still valid, apart from the part about interstate
BTW, I should warn you that recently I sent a copy to a PSI
instructor trainer, who forwarded it to PSI, and they told him that
it was a forgery!"