Well why not get rummaging in your attics and if you find any old ones, or new ones for that matter then send them to him. I am sure he will fix us up with a PO Box number if we are keen enough. Who knows? Someone might send him a priceless one.
You will not be allowed to take part in his Friday night puzzle if you have supplied that night's particular puzzle postcard though.
I don’t think that would be allowed however thanks for thinking of me old pal but rest assured we will never run out - Fran must have at least 10,000 plus! Having said that Fran informs me, as many as she has she is always looking out for more and would be happy to receive any unwanted ones via the yellow envelope. ;o}