looks like the authentic versions I have seen.
My father-in-law was a station manager at KNAT in 1982 when Carson bought his station. As part of the community outreach immediately following the sale, Mr. Carson apparently wrote letters to local dignitaries and my father-in-law added his then 4-year-old daughter to the list of Albuquerque VIPs to receive correspondence. We've had it framed for years but only recently have I began really appreciating authenticity in signatures and thought it may have been a secretary that signed it. Johnny Carson owned local TV stations in addition to being the "King of Late Night."