Rare Vintage Find : "Norman Laboratories electronic crossover - amplifier System 12"

Just had two of these gifted to me.  Can find VERY little info.  Check 'em out.
FRONT IMG-0315 — ImgBB (ibb.co)
REAR IMG-0316 — ImgBB (ibb.co)

• The company was in Norman OK, and is know for speakers, many say they are fine.
• Heck, I'm not even completely sure what are or do.
• I think these came as part of a speaker system.  Would each one be good for a L/R pair or just one side?
• Wondering if they can be used as a crosser for a two-way speakers and a passive subwoofer?
• I think they came from a university surplus, either electronics or music department.

Mainly I just wanted to show them off given their rarity.  I cannot find any other pictures of the crossover/amp, and only one of the speakers.  The speakers looked crazy unique & cool. See Link for five pictures:  NORMAN LABS 12-B SPEAKERS Photo #453801 - Canuck Audio Mart

Would appreciate any info folks may have.  I'm thinking the best use might be to reunite them with someone who has the speakers but no crossovers.

Enjoy and discuss among yourselves.