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Cold Snap
12026-02-19T15:26:04-05:00Anastasiia Pereverten1dee3aa5075817eb04077dbae88a1030d7d4ebb491As the end of the month approaches, we are leaning into winter with a selection from the David Rumsey Historical Map Collection. This ice chart of the Northern Hemisphere takes us back to January 1946. Produced by the U.S. Navy’s Hydrographic Office, it reflects growing interest in polar regions, shipping routes, and risks to navigation. Look carefully and you will see that the chart distinguishes permanent polar packs from areas of sea ice navigable by unreinforced vessels, translating environmental conditions into operational knowledge. But even if you aren’t planning to travel back in time to sail the North Atlantic, you might be curious about the known limits of icebergs and growlers. Enjoy!plain2026-02-19T15:26:04-05:00Anastasiia Pereverten1dee3aa5075817eb04077dbae88a1030d7d4ebb4
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12026-02-19T12:59:49-05:00Paul Vadanf46fd2a7a6d2ab1ecca0ec13c84118eaf61facfaMap of the Week GalleryAnastasiia Pereverten44structured_gallery2026-04-23T17:21:08-04:00Anastasiia Pereverten1dee3aa5075817eb04077dbae88a1030d7d4ebb4