Until 4 p.m., Hudson Hamburgers is celebrating its 100th anniversary today by selling -- hamburgers for 10 cents; double burgers to 20 cents; soda, coffee and pie, for 5 cents. Colleague Erica Curless just returned from the Sherman Avenue mainstay to report the news. Everyone's having a fun time down there, she sez. The Hudsons didn't advertise their decision to scale back the prices to 1907 levels. Otherwise, they'd be overwhelmed. You now have 49 minutes.

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