Skip to content

Josh & Harrison Herz are the elementary school-aged serial entrepreneurs and first-time children's book authors. Josh enjoys Parkour and LEGO. Harrison loves basketball and animals. They are distant relatives of Madeleine L'Engle, whose book "A Wrinkle in Time" was just ranked #3 on the top 100 children's books of all time by Scholastic's Parent & Child Magazine. Writing must be in the DNA!

Along with their father, the boys co-wrote and promote the popular and beautifully illustrated kid's fantasy book Nimpentoad. The book won praise from published authors and garnered 88 Amazon 5-star ratings.

The book tells the tale of the courageous and resourceful little Nimpentoad, who leads his tribe of Niblings through the perilous Grunwald Forest, overcoming obstacles and encountering strange creatures along the way. Kids aged 5-10 enjoy the adventure and stunning illustrations. Parents appreciate a story that discourages bullying, and emphasizes teamwork, creativity, perseverance, and leadership.

With their dad's help, these young entrepreneurs also founded and operate three web-based small businesses. JH LEGO sold custom-designed LEGO gifts and party favors. J&H Bases ( sells custom cast miniature bases and terrain for the fantasy tabletop game Warhammer. YardCritters ( sells custom cast, hand-painted concrete yard animals and insects (think Garden Gnomes).

For more information, please visit

Recent Releases

Do What You Know Is Right

We are only 10 and 12 years old, so we still have a lot to learn. But we have co-written a book. Not only did we help our dad write it, but we help tell people about our book. We have done book readings at elementary schools, the YMCA, libraries, and the San Diego Children's Museum. We have done book signing events at Barnes &; Noble, Warwick's Books, Mysterious Galaxy Books, Readers Books, farmer's markets, and book fairs. We have been written about in a bunch of print and web articles. We have had web radio and video interviews. We…

Read more