yourATCstore's I Wonder? Children #4 collage sheet. You can almost hear their little brains ticking away. What do you think they are wondering about? These are gorgeous images of children for ATCs, greeting cards and collage project. This is the 4th in the series. 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.