I purchased this over 20 years ago when I participated in a nature conservation instructor training course, but I never had the opportunity to use it, so it has been stored at home. It includes 12 large cards (like a paper-story show) for use in observation sessions, a booklet explaining how to use the cards, and one clear file to hold the cards. Card size: 42 x 30 cm The case has some yellowing and a name written on it from storage. I will black out the name before sending it. I took pictures of both sides of the first four cards, but only one side of the remaining cards. I hope someone can make use of this. Please consider that this is a used item with the name blacked out before purchasing.