Do you have any "half gables" in your pile of bits? They look like a full gable lopped in half at the middle, with a right angle, 90 degree end. (not talking about the small triangular gable ends). If you have those, it means you did at one time have the full gables since they are on the same punchboard. Are you 100% certain you didn't misplace one punchboard at the hotel?
Anyway, I'll keep my ear to the ground over at WorldWorksGames to see if anyone else comes up one punchboard short.