Looking for two radio programs from 1975 & 1976: "Fantasy Park: A Concert of the Mind" and "Fantasy Park II".?

I am searching for two syndicated radio program which was broadcast over 200 radio stations in the United States and possibly Canada during Memorial Day weekend in 1975 & 1976.

It was a 48-hour special, "Fantasy Park: A Concert of the Mind". This radio program fooled scores of people believing an actual concert of the greatest performers of rock and roll history were having a concert at an undisclosed venue in their city when in reality it was just a Studio Engineer mixing crowd noise, a concert hall effect, bootleg and live concert audio recordings of the artist introducing their songs. After the artist introduced the song, a studio recording or live recording of their material would be played. Some of the artists featured on this program were Elton John, The Beatles, and Emerson, Lake and Palmer. There was another program, "Fantasy Park II" which was broadcast the following year during the Memorial Day or Independence Day weekend.

I am searching for a clean broadcast copy of one or both of these syndicated radio programs. I have contacted the producer of these program and he discarded the master tapes. If you have a copy of either of these programs or know of a source which might have these programs please let me know. Thank you