Tammi Sauer is the author of All Kinds of Special, Mr. Duck Means Business, Mostly Monsterly, Chicken Dance, Cowboy Camp, and other books. She has worked as both a teacher and library media specialist. She lives in Oklahoma with her husband and two children. Visit her at TammiSauer.com.

Fernando Martín is an illustrator from Valencia, Spain. He studied media and audio-visual communication, but drawing is what he loves the most. He works mainly digitally and likes using limited but colorful palettes. His illustrations are inspired by childhood memories, traveling experiences, eighties cartoons, and music. He illustrated All Kinds of Special by Tammi Sauer, among other books.