Description of set:

    Manafactured by
        Forbes

   Year of Production
        1942

    Basic
        20

    Series Title
       Our America 

Printed on thin stock almost the thickness of an magazine cover.

This set was presented by The Coca Cola Bottleing Company in 1942 and servered as eductional aids.  

Other sets were produced in the same style.  There are two other sets, 1960's Nature, and World War II planes.  None of the educational cards are listed in any price guide that I've been able to find.

The "Our America" series was issued with posters, pencils, book covers and the books with stamps shown here.  

I have found listing of the following Our America sub-series:

Cotton
Electricity
Glass
Hollywood
Lumber
Oil
Steel
Transportation

Each sub-series had posters, book covers and stamp books picturing the same topic material.

If you know of any other series or have any other information about these educational aids from Coca-Cola, I would be interested in hearing your story.