Did John Titor masquerade as Single 7 and other alleged time travelers?

[JudasTitor]

1:23:25

Rick, the radio show guest claiming to be the original Single 7 caller from July 1998 (1 week prior to John Titor faxing Art Bell), details a letter Art Bell recieved from someone claiming to be Single 7. The letter warned Art of Ramona's impending doom before she suffered a fatal asthma attack.

Does anyone have anymore information on the alleged letter Art Bell recived from the time traveler masquerading as Single 7?

How many other aliases did JohnTitor / TimeTravel_0 assume?

 

[JudasTitor]

Here is the original Single 7 (Jonathon 2063) call from July 1998, 1 week prior to John Titor 2036 faxing Art Bell.