Special Jane Austen Thank You Cards. Thank You Card Set. Blank Thank You Card Set of 8. These are great for weddings, birthdays, hostess gifts, teacher appreciation notes and to even just to share a little gratitude for someone meaningful to you. These cards are made with a heavy white card stock and actual Jane Austin book pages. All cards measure 4.1 X 5.8 inches (10.5 X 14.8 cm) which is also known as an A6 card and come with a white envelope and is kept in a clear sleeve for protection.