"Chocolate Bar" by Dylan Siegel is available for purchase on ChocolateBarBook.com, as of July 2015. The money raised from the book's sales goes to research for a cure for GSD Type 1b, a rare liver condition.
Visitors to the ChocolateBarBook.com home page should click on the "Click Here to buy a book" link. Each customer selects how much he wants to donate and how many copies of the book he wants. Each requested book requires a $20 minimum donation. The customer then enters his information to complete the process.
Siegel wrote "Chocolate Bar" at age six. He donates the money he makes because his friend, Jonah, has GSD Type 1b. Siegel set a goal of $1,000,000, which he raised in two years.