In order to capitalise on the very favourable response from the public at the Brighton Toy Fair and modelling press reviews at the launch of the system, Wrenn produced a number of trade adverts which were to be included in the modelling magazines.
A series of illustrations were generated to accompany these adverts over the later years and they ranged from simple pen and ink line drawings to black & white illustrations. As usual the quality of these did vary. Some of the adverts included a photo of a factory-built layout and even joint ones, including Wrenn railways, have been seen. A sample of these illustrations as seen up to press, are included here but are in no way definitive, since these are not documented. A few original artworks of these adverts have recently been offered for sale.