How many albums by the artist who released Sending You a Little Christmas have made the Billboard charts?
Sending You a Little Christmas (album): Sending You a Little Christmas is a Christmas album by American pop singer Johnny Mathis that was released on October 29, 2013, by Columbia Records. Johnny Mathis:  Starting his career with singles of standard music, he became highly popular as an album artist, with several dozen of his albums achieving gold or platinum status and 73 making the "Billboard" charts to date.
73