Aurora Plastics and Postage Stamp Trains ceased marketing around 1969 or early 1970.  At this point, the 1970 Minitrix catalog for the American market appeared in the scene. Inside the front cover was the statement: “Trix Trains distributed in Western Hemisphere by American Tortoise Inc., 180 Smith Street, Farmingdale, New York 11735”. The Smith Street address was repeated on both the outside front cover and on the back cover of the catalog.  This address is the same as for Model Power, a model railroad manufacturer and importer that started business at about the same time.

The Minitrix / American Tortoise catalog displayed only the North American prototype Minitrix items, and many of the graphics were the same ones that had been used in earlier Aurora Plastics’ Postage Stamp Trains catalogs:

The catalog also gives information about countries of origin of the different products:

• Locomotives and Track - “Made in Germany”, which would be Trix of Nürnberg.
• Rolling Stock - “Made in Austria, which would be Roco.
• Power Packs - “Made in USA, which could be several different manufacturers that are unknown at this writing.