The 'Dubois' Collection, last exhibited in the Court of Honour at ‘Ameripex’ in New York in May 2016, was built up over a thirty year period as the collector's interests expanded from one area to another with the initial interest in “British Europe” being closely followed by Jamaica and other Caribbean areas; expanded into Crowned Circles, the Crimea, Colonial America and then the general usages of British postage stamps abroad, including on mailboats. In time, the collection grew to include a worldwide selection of postal history, tracing the involvement of the British Post Office in many different countries.