Red, there was a book called “The Third Terrorist: The Middle East Connection to the Oklahoma City Bombing” by Jayna Davis. She was an investigative reporter for KFOR-TV in Oklahoma City and covered the bombing in 1995. I heard her speak once and it appears that the Feds shut her down. She said that Bill Clinton personally shut it down. I highly recommend that you read it, if there are any copies still available if you can find them.
Oklahoma City Bombing, April 19, 1995 - Clinton Administration
TWA Flight 800, July 17, 1996 - Clinton Administration
United States African Embassy bombings, August 7, 1998 - Clinton Administration
Looks that book is still readily available:
https://www.amazon.com/Third-Terrorist-Connection-Oklahoma-Bombing/dp/1595552367
The book is available on internet dot org for those with print disabilities.
Unfortunately it is not available to the general public.
Thanks for the book recommendation! Red — there are several reasonably-priced copies available on abebooks.com.