[meteorite-list] Meteor Crater Study Kit by Nininger

[Walter Branch]

Hello Everyone,

I received today one of Niningers Meteorite Crater Study Kits.
This is the neatest thing and it is in pristine looks-like-it-has-
never-been-opened condition.

The only date I could find was in the Comet Strikes the Earth
book; 1942 and 1969.

Does anyone have any info on these?  When they were produced?  
How many?  Were they sold at the museum?

Any information would be appreciated.

-Walter