Poster Stamps
of the Chemical Industries Exposition

(Click on any image to see a higher-resolution version.)

Cinderella stamps. A Cinderella stamp is essentially any stamp not produced by a government for use as postage, a definition which includes (to some people) officially-issued stamps such as tax stamps, telegraph stamps and locals. Poster stamps are advertising stamps, and usually poster-like in their appearance. Many are indeed just reduced versions of actual posters, and were issued in conjunction with the events for which the posters were produced. The poster stamps on this page were all issues in conjunction with the Chemical Industries Exposition in the U.S., now called "Chem Show". One even thas a train! Below are all I have been able to accumulate so far. Thanks to the history page of the organization that runs the show, I was able at last to assign reliable dates to the first two.

 
1915

1916

1917
 
We know the Expo was held in 1918 through 1920, because they incemented the show numbers - 1921 is the Seventh - but I have seen no stamps for those years.

1921

1922

1923

1925

1927

1929

1931

1933 Spring

1933 Fall

1935
Note the two shows in 1933, and the change from Spring to Fall dates from then on.

1937

1939

1941

1943

1946
WWII didn't stop the shows, but the 1945 show was delayed a year.

1947

1951

1953

1961

1963

I find it interesting that even as late as 1963, the Exposition was still showing factories belching polluted smoke into the air. I wonder when they dropped that image?

The stamp below may be a precursor to the series. It's interesting to note the way new technologies are grouped at first, then assume identities of their own. Early auto show were often combined with shows for electricity, for example.


I have these two covers that relate to the theme as well:

IF YOU CAN ADD to the images above, please email the author at


Click here to access my web page about the 1936-1951 Poster Stamp Bulletin of the National Poster Stamp Society.

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All text Copyright © 2004, William M. Senkus

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Created -- 05/24/2004
Revised -- 06/19/2015