@CALNNC, the prewar Greenberg book I referenced is about 400 pages. This is not to be confused with the Greenberg's Repair & Operating Manual for Prewar Lionel Trains which is the ~100 pages you mention and is a subset of the ~400 page publication.
As pointed out, Supplement 17 serves as an index, and there is the informal index GRJ shared floating around.
As to Olsen's, it is my understanding their website computer has crashed, but they do list inventory on ebay and still take orders via mail.
It is unfortunate that the licensed/legal options recommend don't meet your expectations.
