Dinosaur tracks in the roofs of coal mines: a strange phenomenon noted in Utah and Colorado - 1924
Early fossil hunting in the Rocky Mountains - 1926
Fossil collecting in the Mississippian Formations of the Mississippi Valley - 1926
Childs Frick Tertiary-Quaternary Explorations, 1928 - 1929
A spine-armored saurian of the past - 1932
Sinclair Dinosaur Expedition, 1934 - 1935
The story of the dinosaur eggs - 1936
[An explanation of the distinction to be observed among dinosaur tracks] - 1939
Thunder in his footsteps - 1939
Mysterious steps in Purgatory - 1939
A dinosaur walks into the museum - 1941
The meek inherit the earth [rise of mammals] - 1942
Did Brontosaurus ever walk on land? - 1944
The little dinosaurs of Ghost Ranch - 1947
Dinosaurs of the Arctic - 1964