this showed up in college , next to a toaster where you might toast ordinary american sliced bread.
Seasonally . no explanation .
and the food was quite decent in those days , and you could go back for seconds etc
I tried it as vehicle for about 1/2 " of butter or more , evenly distributed over a piece
it worked well enough for that . as @haresfur has suggessted , similar a Carr cracker .
but there was no other cracker option for the butter.
you could eat the butter ( those single pat thing-is ) neat of course.
the box stayed there for days and days , hardly touched .
this suggests it was was never removed to any dorm room
for a 10 PM ' pick me up '
Q.E.D.
as @weinoo has suggested :
Vogue ? really ? you can document that ?