yourATCstore I Wonder? #13 Collage Sheet. This I wonder collage sheet has 20 gorgeous beauties pondering thoughts of love and life. What do you think they are wondering about? These are beautiful images of beautiful women for ATCs, greeting cards and collage project. Also comes with 14 "I Wonder?" words to cut and use on your artwork too. This matte finish collage sheet is professionally printed and comes in a crystal clear bag for protection. Sheet measures 8 1/2" X 11" and are Acid Free.