Reply to "Source for early Lionel catalogs?"

I have both the HSL CDs and the Greenberg reprint catalogs, neither of which are available except on the secondary market.  They are very nice indeed, and that's why the Greenberg reprints are on the expensive side. But buying original catalogs in decent condition is also very expensive.  Haven't noticed whether HSL disks have appeared on the secondary market, but there is a lively trade in the Greenberg books in the usual place one might look.