The Drunken Botanist : The Plants That Create the World's Great Drinks
2013
The Earth Moved : On the Remarkable Achievements of Earthworms
2012
Girl Waits with Gun (Kopp Sisters)
2015
Kopp Sisters on the March (Kopp Sisters)
2019
Lady Cop Makes Trouble (Kopp Sisters)
2016
Miss Kopp Just Won't Quit (Kopp Sisters)
2018