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Walks on Young's lattice of integer partitions encode many objects ofalgebraic and combinatorial interest. Chen et al. established connectionsbetween such walks and arc diagrams. We show that walks that start at$\varnothing$, end at a row shape, and only visit partitions of bounded heightare in bijection with a new type of arc diagram -- open diagrams. Remarkablytwo subclasses of open diagrams are equinumerous with well known objects:standard Young tableaux of bounded height, and Baxter permutations. We give anexplicit combinatorial bijection in the former case.

Tableau sequences, open diagrams, and Baxter families