From The Document Foundation Wiki
|LibreOffice Postcard 5" x 3.3"
|File:Post-card-generic5x3 3inch.odt||Post-card-generic5x3 3inch.pdf||File:Post-card-generic.pdf (logo file|
|Examples of LibreOffice Postcards for Specific Events or Conferences
|* Examples of German Marketing postcards   prepared by the German Team for CeBIT2011 in Hannover