Toymaker in America (Canada included) and Europe eagerly took part in the Mah Jongg rage. Often they marketed a broad assortment (see section US Brands). Sometimes they produced only one single set or just a couple of editions.
Though high quality and thus dearer sets were available, most were made on the cheap. Also a range of materials was used for tiles, accessories and often included racks. Like cardboard, wood, Bakelite, celluloid and even tin.
To circumvent copyright, sets frequently got all kind of fantasy names.