Jim R: from your link;
Tooling acquired in the agreement includes the 2-8-0, U25B, RS11 and VO-1000 locomotives, the Troop Sleeper and
Kitchen Cars, the Pullman Bradley Coaches, the War Emergency Gondola, the Wagontop Box Car; and the H30 Covered Hopper.
In addition, the molds for the 20’ Containers and telephone poles have also been obtained.
NO Weaver RS3's are on that list. I believe the RS3 and the GP38 were of USA tooling which Lionel obtained [and makes sense since Atlas O has an RS3/ RSD4 diesel already]