Popeye wears a blue sailor suit in this episode.
The grey seal who propels the frozen Popeye out of the icy water then breaks the fourth wall for a brief second after he swallows a fish.
The Klondike refers to a section of the Yukon, in Canada, famous for the 1896 gold rush. Nome, however, is in Alaska, though it, too, had a gold rush stampede in the 19th century.
Radio jingles, as sung by the trio of bears, were part of on air advertising ads. The example here is accurate, if humorous. TV advertising would continue the practice, evolving into a major multimedia enterprise.
Bluto/Brutus appears as a stereotypical French Canadian trapper/miner/tough guy here.