Does anyone know of a compilation of Lionel S-gauge locomotives up through the present*? I believe that Bob Bubeck's 2012 book was the last such compilation - besides the listing of most S-gauge products in the Greenberg Pocket Price guide that comes out every year. The problem with the latter is simply that the listing is by catalog or item number - which is fine for trying to find info on a single item. But suppose you wanted to know how many versions of the 4-8-4 were done (and what the differences might be). In fact, that is one of the questions I had as I was involved in the recent Cabin Fever auction of S-gauge locos and rolling stock. There were two (as I recall) versions of the FEF (post ACG) 48047 and 48054 (from 2006) listed, but I couldn't recall how many versions of the FEF were done after that. It was mostly academic, as those two locos rapidly exceeded the price I was willing to consider paying (I did manage to spend some money on other items).
I did look at the NASG website, which is usually pretty comprehensive, but under Lionel 4-8-4, they only list the four locos from 2016-17, #s 47950-53**. Actually, I just now looked at the Gilbert Gallery - https://www.thegilbertgallery....ngines-Northern.html - which says that ACG produced 13 variations of the FEF and Lionel did either 18 or 19 (one page sez 18 and one sez 19). In fact, this site has pictures of most of the different versions - at least the different versions by year. So maybe I've partially answered my own question. I'll have to go back and study that site in greater detail, as I thought he had stopped with just ACG products (apparently not).
Incidentally, the aforementioned auction contained a 21140 version (ca 1960) with a price, the last time I looked, that was headed north of $5k! Mustabeen a few collectors lurking!
*obviously, such a listing or listings doesn't have to stop with just locomotives or, for that matter, just what Lionel produced... Still, the only listing that I know of is the pocket guide from Greenberg, which covers more than just Lionel (I know, there is the question about how "accurate" the prices are...).
** the NASG site claims that these are all plastic - is that right??