Listed below is a catalog reference quick Guide. I had four sources for the circus toys. A 1906 lancaster Toys catalog that had an addendum in the rear that listed circus toys from 1919 to 1926.  Second a 1919 hubley catalog. Third a 1929 Hubley catalog and last a 1932 catalog. If the size is listed in the appropriate catalog column then the toy showed up in that edition. If there was a change in the offering I noted that change. If it dissapears or appears then "not shown" is noted in the appropriate column. 

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