Dennis, the Hudson set appears to be a 1947 set based on the tender lettering and the couplers. The two action cars look like they have outside pickup shoes rather than the pickup shoes between the wheels.
Some of the track appears to be 1946 production but it is hard to be certain from the pictures. Three of the 4 curve pieces in the picture to the right of the track switches look like they have blackened webs under the rail head. this was done in 1946 only. It is possible some leftover inventory could have been included in early 1947 sets.
The track switches look like 1947 production. I base this on the controller box. The levers are centered between the two throw positions, in 1946 the levers stayed at the last used throw position with no return to center. The 1946 turnouts were wired differently to work with these control boxes. Also 1946 turnouts would have blackened rail webs.
Nice find, enjoy the set.
