It's no longer available on CD at Arkivmusic where I purchased my copy years ago. However CD Universe offers it as a MP3 download for $9.99. You can also hear a sampling of the tracks.
NOWaWarning said: "It’s also on Spotify. Her “So Long, Dearie” is one of my favorites!"
+1 to this! Until I heard Donna Murphy live in December, Mary Martin was my favorite Dolly. Now, Donna is but Mary gave us my favorite professional recording!