CPM meaning in Regional ?

The Canadian Postal Museum (CPM) was a museum once housed within the Canadian Museum of Civilization in Gatineau, Quebec. It was described by the Smithsonian Museum as being one of the five largest postal museums in the world, ranking second in annual attendance. The museum was not primarily about postage stamps, although it has a first-class collection that numbered in the tens of thousands. Rather, it presented the broader story of Canada's postal heritage, including the social and economic importance of postal communications throughout the country's history. It also explored international themes relating to postal communications.