If you’re looking for an alternative to Amazon, ebook versions of the Boone series are now available on Apple Books, Kobo, Google Play, and Barnes & Noble. The links below still take you to Amazon; I’ll be working on adding links to the other options soon.
Boone Series:

Stumbling Into Adulthood – box set, ebook version only
Children’s Books:
English Titles

Father and Sister Radish and the Rose-Colored Glasses
Spanish Titles

Padre, Hermana Rábano y los Lentes Color de Rosa
German Titles

Vater und Schwester Radieschen und die Rosafarbene Brille
Other Fiction:

Nonfiction:
