Santa Claus is Coming to Town

I can't believe I've never written this one up, but I don't see it in the archives. Santa Claus is Coming to Town is a 1970 Rankin Bass stop motion TV special. It was never one of my favorites, but the kids always liked it and The Daughter is the one who suggested it today. Fred Astaire is the mail carrier/narrator who starts off the show by opening Santa's letters and reading them to us. Isn't opening someone else's mail illegal? The story is told, then, to answer common questions children ask, such as, "Why does Santa wear a red suit?" Mickey Rooney voices Santa. Keenan Wynn and Paul Frees are also in this. I can't find an embeddable trailer or clips. I'm always surprised when there's so little video available for something that's so popular.