The Camp Fire Girls at Driftwood Heights

Florida Caverns State Park

Marianna, Florida

The Outdoor Girls on Pine Island; Or, A Cave and What It Contained

Dan Carter and the Great Carved Face

The Netherworld of Mendip

Explorations in the great caverns of Somerset, Yorkshire, Derbyshire, and elsewhere

The Hot Swamp

The Motor Boys Afloat; or, The Stirring Cruise of the Dartaway

The Motor Girls at Camp Surprise; Or, The Cave in the Mountains

The Girl Scouts at Singing Sands

Glacières; or, Freezing Caverns

Cave Regions of the Ozarks and Black Hills

Chicken Little Jane

Cave Hunting

Researches on the evidence of caves respecting the early inhabitants of Europe

The Jenolan Caves

An Excursion in Australian Wonderland

The Scarecrow of Oz

The Phantom Town Mystery