I can't find much hard information about this group, although they MAY have evolved out of Chicago girl group The Kittens...It wouldn't surprise me, as the singers on this record sound like they have quite a bit of experience and show a fantastic harmony blend!
The arrangement is one of those fantastic period Chicago mid-tempo "steppers" with that amazing bubbling bass as was heard on so many records from the period.
I am also guessing at the year of original release. The record was reissued on Decca for national distribution in 1971, where it unfortunately sank like a stone.
SILK - FALLING IN LOVE ISN'T EASY