I want to find the song "Friday" from the cassette or CD named
"Messiah Bright Morning Star" done by Reba Rambo and Dony McGuire. I
wrote to the McGuires and was told that it is no longer available.

Hello.

A dealer on MusicStack is selling the vinyl LP of "Messiah Bright
Morning Star" by Reba Rambo And Dony McGuire.  The list price is
$10.50. If you pay an additional $8, the dealer will burn a CD of it
for you.  See MusicStack.com:
http://www.musicstack.com/item/408215783/reba+rambo+and+dony/messiah+bright
(Note this link may expire in a day or two. If that happens, please
let me know via the "request clarification" feature).


Another copy of the vinyl LP is listed for  $24.51 on Alibris.com :
http://www.alibris.com/search/detail.cfm?chunk=25&mtype=M&qtit=messiah%20bright%20morning&S=R&bid=5224146076&pqtynew=&page=1&matches=1&qsort=r

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search strategy:
musicstack.com, messiah bright morning 

I hope this helps.
alibris.com, messiah bright morning