O. Tippo

Angiosperm Orders and Families. (Book Reviews: An Integrated System of Classification of Flowering Plants)

Arthur Cronquist, O. Tippo, A. Cronquist, 1982 .

Comparative Anatomy of the Moraceae and Their Presumed Allies

O. Tippo, 1938, Botanical Gazette.

THE COMPARATIVE ANATOMY OF THE SECONDARY XYLEM AND THE PHYLOGENY OF THE EUCOMMIACEAE

O. Tippo, 1940 .

THE EARLY HISTORY OF THE BOTANICAL SOCIETY OF AMERICA

O. Tippo, 1956 .

The Role of Wood Anatomy in Phylogeny

O. Tippo, 1946 .

Confessions of a botanical editor

O. Tippo, 2008, Economic Botany.