eHow - Holidays & Celebrationshttp://www.ehow.com/guide_15-http://www.ehow.com/guide_15-holidays.html.htmlwww.ehow.comWhen to Send Christmas Thank You Cardshttp://www.ehow.com/how_2369512_when-send-christmas-thank-cards.htmlLearn when to send thank-you letters for Christmas gifts in this free etiquette video. Published on 6/26/2008