If you look up any title on the Cast Album database (use the link in my previous message) you will find info on any commercial records and quite a few non-commercials as well.
There were songs from LOOK TO THE LILLIES on one side of an LP (PLEASURES AND PALACES was on the reverse) and it appears that has come out on CD. Beware these Blue Pear discs as hey are often dubbed from sound system tapes and quality is quite poor.
http://www.castalbums.org/recordings/3328 There is a CD of LOVELY LADIES listed but it this bootleg from a "live audeince tape" (which means given the technology of the time it will probably be unlistenable.) I had heard that Bruce Yeko was planning a studio cast album of the score but haven't heard much about it.
http://www.castalbums.org/recordings/8121 Nothing on Georgy Girl, although audeince or sound system tapes are probably out there. (I do not collect these since the sound quality is so poor, and legally I cannot use them on my radio show.)
Some of the cut songs from FIDDLER can be heard as bonus tracks on the recent reissue of the OBCR. Also on this recording you can hear "When Messiah Comes"
http://www.castalbums.org/recordings/1003 It is also on one of the LOST IN BOSTON albums. Ther were 4 volums released all featuring songs that were cut from shows. All 4 contain a wealth of great material and are worth invstigating.
http://www.castalbums.org/search/?s=Lost+in+Boston
Cast albums are NOT "soundtracks."
Live theatre does not use a "soundtrack." If it did, it wouldn't be live theatre!
I host a weekly one-hour radio program featuring cast album selections as well as songs by cabaret, jazz and theatre artists. The program, FRONT ROW CENTRE is heard Sundays 9 to 10 am and also Saturdays from 8 to 9 am (eastern times) on www.proudfm.com