How do U.S. postage stamps come to be? ELT explores the secret world of the Citizens’ Stamp Advisory Committee, the group that decides what gets stuck on America’s envelopes. Plus, Bigfoot gets his due.Guests: Bill Gicker, manager of stamp development at USPS; Jessica, ex-CSAC member; Kam Mak, artist and stamp illustrator. Thanks to caller Elizabeth. “Mr. Stampman” performed by Bobby Lord, Matthew Boll, MR Daniel, and Julia Kaplan. Have a question that needs answering? Call the ELT Help Line at 833-RING-ELT.See Kam's stamp here: https://twitter.com/eltshow/status/1089959537434681344