Complex sentence: In 2008 three of Arnold Lobel's uncolored, unpublished, Frog and Toad books were discovered in an estate sale, they were consolidated into two books and colored by Lobel's daughter Adrianne Lobel, however these books appear to be very different than the original set.
Split into simpler sentences: In 2008 three of Arnold Lobel's uncolored, unpublished, Frog and Toad books were discovered in an estate sale. They were consolidated into two books and colored by Lobel's daughter Adrianne Lobel; however these books appear to be very different than the original set.