Great news. Cheers for the info, Jeff. Out of all the missing Mercury/Campbell shows, this is one that I've especially regretted not being able to hear, and never hoped that I'd be able to without somebody recovering radio signals from space (!). Now somebody just needs to track down "Call It A Day" with Beatrice Lillie and I'll be even happier
The LOC doesn't have many Mercury and Campbell shows (3 Mercury shows and 5 Campbells), all of which come from the "Audioscription Disc Collection". I couldn't find any more info on this on the Library of Congress website; and a search for "Audioscription" on the net doesn't return anything related to this collection. Might it have been some kind of independent transcription service? Or possibly a company which had aimed to issue recordings on LP?
The catalogue records for these recordings seem to indicate they were tranferred from disc to 1/4 inch polyester tape in 1968.
"2 sound tape reels : 7.5ips, double-track, mono ; 10-inch, 1/4-inch (polyester). Recording Laboratory 1968. Duration: 006000. Collection/Donor name: Audioscription Disc Collection. "
I guess the "10-inch" segment refers to the diameter of the tape spools, not the original discs? I can't find any indication as to why "Farewell to Arms" hasn't surfaced until now, unless this collection of tape transfers has only recently been obtained/catalogued by the LOC.
The LOC website says it offers copies of its recorded sound collections for $109/hour. I'd be happy to kick in a few bucks if other people want to do the same to get a copy of this show.