Flyer O to S transition

For how many years did A.C. Gilbert produce the Hudson, K4, Northern and Atlantic locomotives in O gauge before using the same castings to produce the locomotives in S gauge?

Based on the catalogs, it looks like the Hudson and Nothern came in '39, the K-5 in '40, and the Atlantic, 0-8-0 and Royal Blue in '41

http://www.rfgco.com/americanflyertrainscatalogs/catalogs.html

Thanks for the link. Very interesting. Bruce Baker

Brady, Thank you for the enjoyable and interesting link. That link has a beautiful rendition of beautiful Ann Francis. Ralph

Go to http://cs.trains.com/trccs/forums/t/116423.aspx thread by North American Flyer and it will have pictures.

Jim

Thank you Jim for more valuable info. Ralph