I don't get why you're so hard-over on receiving it by mail. It's been suggested several times to drop by a local hobby shop and pick one up!
Of course, the on-line options is available as well: Lionel 2021 Catalog (Big Book), and you can download a local copy.
If it comes down to waiting for the mail and the order deadline passes, are you really going to simply not order anything as a US Postal Service Protest? The fact that you don't have a catalog has nothing to do with LCCA or Lionel, it's not their fault that the PO didn't deliver them to your area!