Lionel Trains
In two years (1950), Lionel introduced "Magne-Traction". 
This involves magnetized wheels on the locomotive.
It delivered more pulling power than ever before, since the tracks are steel and the wheels are magnetic, they would stick like crazy.
 
Lionel48
Lionel48

And here it is. The 1950 Lionel with Magne-Traction.

 This is also a very good looking ad and makes a great poster.

 And these are the best posters available anywhere. You just can't beat photographs for the best images. 
 


 

Lionel50
Lionel50