Hapsburg Inn (Des Plaines, IL)
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We weren’t certain from Google whether this restaurant was still there or not, but a thoughtful informant tell us that it’s gone. We ate there once … maybe didn’t tip enough? The card was mailed in 1955 with a 3-cent stamp and full postmark, but also has a travel agent’s rubber stamp and then another date stamp on the reverse. Postmark ink on the front, too. Grade: 4