Wow nice find E! I don't see where Puerto Rico is mentioned. Did you have something proving that part? Even if you don't, nice find!

In 1933, three American Nazis - Helen and E. Clifton Barton and Lawrence Echevarria, incorporated the Internal Revenue Tax and Audit service as a private Delaware corporation, for the purpose of establishing a monopoly tax collection agency on behalf of the government. Tax money was covertly conduited to Germany to fund the Nazi military build-up. In 1936, the treasonous company became unincorporated, in order to disguise its private ownership, and changed its name to the Internal Revenue Service. The Bureau of Internal Revenue, created in 1862 to collect excise taxes, was abolished in 1953.