From your link: "The earliest top hat is often attributed to English milliner John Hetherington in a (possibly apocryphal) story in the St James’ Gazette in January 1797. Hetherington’s first public outing in the top hat caused a riot, and he was later charged for “having appeared on the Public Highway wearing upon his head a tall structure having a shining lustre and calculated to frighten timid people”.
Penny Singleton provided the voice of Jetsons mom Jane. The actress would have been quite familiar to older viewers, and aficionados of comic characters.
Is that a Panama hat?... Whatever it is, every time I see one like it now, I think of Anthony Hopkins and the final scene of Silence of the Lambs. (click on image)
The pickelhaube. I always wondered what the pointy things were for. Do you head butt someone with your helmet? No. They were originally used to mount tassels, usually made of horse hair. Prussian army, 19th century.