Ever since Mark asked his brother if he wanted to illustrate the first book, "A Raindrop's Journey," the two have been working together.
Jack Graber is the art director for The Creative Advantage, so he was more than prepared to start illustrating children's books.
"I was always interested in illustrating and drawing," said Jack. "I just had to make my style a little more kid-friendly, and that worked out really well."
Some of the ideas for books come from what Mark's wife, a second-grade teacher, is doing in her course work with the children. Jack said they like to have the books complement what teachers are doing in the classroom.
"The teachers love the books. They become almost like teaching aids in a way," said Jack. "The schools like two brothers who have done this together. The teachers tell us that it is a great example to give the kids."
To promote their book, the two offer a full-day school program for children in grades K-3. Along with getting to meet the men behind the book and hear the author read it to them, students get an insight into the creative process. Children can even participate in a hands-on drawing presentation along with the multimedia presentation.
"We get a lot of nice feedback from teachers," said Jack Graber.
For Jack, the recent book had him exploring a different way of illustrating. In previous books, he would draw and color everything by hand, but for "The Swamp King," he did the outlines by hand and then used a computer to color it using Adobe Photoshop and Adobe Illustrator.
"The combination came out very nice," he said.
For information on the brothers' work and school program offerings, visit www.JourneytimeBooks.com.