The song "Mary McGill" was attributed to "Kim Walleck" in a posting earlier. The song's official title is "Freedom to Choose", and it is by (the late) Bob Blue and Kim Wallach. The song is included in the "Mister Blue Songbook", and Kim Wallach's performance of it is on the 2 CD set "The Best of Bob Blue". My understanding is that the songcrafting is primarily Bob's, but the ideas were developed jointly by the two writers.