Danny Dunn, Invisible Boy

Danny Dunn on the Ocean Floor

Danny Dunn and the Anti-Gravity Paint

Danny Dunn on a Desert Island

Danny Dunn and the Fossil Cave

Danny Dunn and the Homework Machine

Danny Dunn, Time Traveler

Danny Dunn and the Swamp Monster

Danny Dunn and the Automatic House

Danny Dunn and the Weather Machine

Danny Dunn and the Smallifying Machine

Danny Dunn and the Voice from Space