I noticed this pic showing a mountain bike outfitted with drop bars.
It is from the 1988 bookThe Mountain Bike Book by Rob Van der Plas.
The caption said"Look, no wide handlebars (nor special shifting and a few other of today's popular gadgets). This is Bridgestone's MB1: strong, light, agile and equipped with the pick of no-nonsense components."
I am especially posting this for Bikes-N-Drums who asked about drop extensions for his mountain/cross bike which he is using for commuting.
Kinda cool, except I would have the shifter cables follow along the handlebar to the stem and then down instead of the goofy arrangement of the original Bridgestone MB1.
Neat old school stuff.