National museums of Canada (NMC) is the corporation name of the National Gallery of Canada, the Canadian Museum of Civilization, Canadian Museum of Nature and the National Museum of Science and Technology. Also within the corporation umbrella are the Canadian Conservation Institute, the Museum Assistance Program, The National Museum Library, and other miscellaneous museum and administrative offices. The NMC Corporation is operated by four Crown corporations, established on July 1, 1990, by the Museums Act (1990): The National Gallery of Canada Corporation, the Canadian Museum of Civilization Corporation, the Canadian Museum of Nature Corporation, and the National Museum of Science and Technology Corporation (now the Canada Science and Technology Museum Corporation).