20 books
Record of My Life Work in Entomology (Classic Reprint)
Enumeration of the Diptera of the Malayan Archipelago
Collected Papers, Volume 1
Catalogue of the Described Diptera of North America Volume 16, No. 2
Prodrome of a Monograph of the Tabanidae of the United States; Supplement Volume 1-2
Biologia Centrali-Americana Volume 45; Insecta. Diptera
Catalogue of the Described Diptera of North America Volume 3
Catalogue of the Described Diptera of North America Volume 3, No. 1
Report Upon the Collection of Diptera Made in Portions of Colorado and Arizona During the Year 1873
Diptera from the Philippine Islands Brought Home by Carl Semper and Described by C.R. Osten Sacken
On the Oxen-Born Bees of the Ancients (Bugonia) and Their Relation to Eristalis Tenax, a Two-Winged Insect
Record of My Life-Work in Entomology
Prodrome of a Monograph of the Tabanidae of the United States (Volume 1-2)
Western Diptera; Descriptions of New Genera and Species of Diptera from the Region West of the Mississippi, and Especially from California
Enumeration of the Diptera of the Malay Archipelago Collected by Odoardo Beccari, L.M. D'Albertis, and Others
Monographs of the Diptera of North America, Volume 6, Issues 1-2
Western Diptera
Catalogue of the Described Diptera of North America
Catalogue of the Described Diptera of North America, Volume 3, Issue 1
An Introduction to the Record of My Life Work in Entomology