big train posted:Ted,
On the Atlas site, there is a tab at the top labeled "Information". If you pull down that menu, you will find "Parts Diagrams" part way down the list. Once at the part diagram page, you'll need to scroll down to find the O scale information. Its ordered as Master locos, Master rolling stock, Trainman locos, and then Trainman rolling stock.
By the way, the Information tab is also where you would find the archive of past releases, plus other product documentation such as manuals.
Been there myself, sadly no "F" units.