Modern Mechanix blog spotted this in a copy of Ye Olde (1918!) National Geographic Magazine: an advertisement for a typewriter with variable fonts.

No Other Typewriter Can Do This—

Change instantly from

Miniature Roman to Large Gothic.

Medium Roman to Italics.

Vertical Script to CLARENDON.

English to Russian.

TURKISH TO PUNJABI.

This can be done by “Just Turning the Knob” on the Multiplex Hammond “Writing Machine”

Link

From the Upcoming ueue, submitted by Minnesotastan.