Ortmann, A.E. 1907. Nordamerikanische Flubmuscheln. Sonderabdruck "Aus. der Natur." Jahrg. 1907(8):1-9.

Ortmann, A.E. 1909. A preliminary list of the Unionidae of Western Pennsylvania, with new localities for species from Eastern Pennsylvania. Annals of the Carnegie Museum 5(2/3):178-210.

Ortmann, A.E. 1909. The breeding season of Unionidae in Pennsylvania. Nautilus 22(9):91-95; 22(10):99-103.

Ortmann, A.E. 1909. Unionidae from an Indian garbage heap. Nautilus 23(1):11-15.

Ortmann, A.E. 1909. The destruction of the fresh-water fauna in western Pennsylvania. Proceedings of the American Philosophical Society 48(191):90-110.

Ortmann, A.E. 1910. The marsupium of the Anodontinae. Biological Bulletin (Woods Hole) 19(3):217.

Ortmann, A.E. 1910. The systematic position of the unionid genus Parreysia. Nautilus 23(11):139-142.

Ortmann, A.E. 1910. A new system of the Unionidae. Nautilus 23(9):114-120.

Ortmann, A.E. 1910. The soft parts of Spatha kamerunensis. Nautilus 24(4):39-42.

Ortmann, A.E. 1910. The discharge of the glochidia in the Unionidae. Nautilus 24(8):94-95.

Ortmann, A.E. 1911. A monograph of the najades of Pennsylvania. Parts I and II. Memoirs of the Carnegie Museum 4(6):279-347 + 4 plates.

Ortmann, A.E. 1911. The anatomical structure of certain exotic naiades compared with that of the North American forms. Nautilus 24(9):103-108; 24(10):114-120; 24(11):127-131 + 2 plates.

Ortmann, A.E. 1911. The classification of the European naiades. Nautilus 25(1):5-7, 25(2):20-23.

Ortmann, A.E. 1911. The use of the generic names Unio, Margaritana, Lymnium and Elliptio, and of Anodonta and Anodontites. Nautilus 25(8):88-91.

Ortmann, A.E. 1912. Notes upon the families and genera of the najades. Annals of the Carnegie Museum 8(2):222-365 + 3 plates.

Ortmann, A.E. 1912. The anatomy of the najad Hyridella australis (Lamarck) (=Diplodon australis). Nautilus 25(9):100-103.

Ortmann, A.E. 1912. Cumberlandia, a new genus of naiades. Nautilus 26(2):13-14.

Ortmann, A.E. 1912. Lampsilis ventricosa (Barnes) in the Upper Potomac drainage. Nautilus 26(4):51-54.

Ortmann, A.E. 1912. The geological origin of the fresh-water fauna of Pennsylvania. Topographic and Geological Survey of Pennsylvania (1910-1912):130-149.

Ortmann, A.E. 1913. Studies in najades. Nautilus 27(8):88-91.

Ortmann, A.E. 1913. The Alleghenian Divide, and its influence upon the freshwater fauna. Proceedings of the American Philosophical Society 52(210):287-390 + 3 plates.

Ortmann, A.E. 1914. Studies in najades. (cont.). Nautilus 28(2):20-22, 28(3):28-34, 28(4):41-47, 28(5):65-69.

Ortmann, A.E. 1915. Studies in najades. (cont.). Nautilus 28(9):106-108, 28(11):129-131, 28(12):141-143, 29(6):63-67.

Ortmann, A.E. 1916. The anatomy of Lemiox rimosus (Raf.). Nautilus 30(4):39-41.

Ortmann, A.E. 1916. The anatomical structure of Gonidea angulata (Lea). Nautilus 30(5):50-53.

Ortmann, A.E. 1916. Studies in najades. (cont.). Nautilus 30(5):54-57.

Ortmann, A.E. 1917. A new type of the nayad-genus Fusconaia. Group of F. barnesiana Lea. Nautilus 31(2):58-64.

Ortmann, A.E. 1918. The anatomy of two African nayades, Unio caffer and Spatha wahlbergi. Nautilus 31(3):75-78.

Ortmann, A.E. 1918. The systematic position of two species of mussels from the Ozarks. Nautilus 32(1):13-15.

Ortmann, A.E. 1918. The nayades (freshwater mussels) of the Upper Tennessee drainage. With notes on synonymy and distribution. Proceedings of the American Philosophical Society 57(6):521-626.

Ortmann, A.E. 1919. A mongraph of the naiades of Pennsylvania. Part III: Systematic account of the genera and species. Memoirs of the Carnegie Museum 8(1):xvi -384 + 21 plates.

Ortmann, A.E. 1920. Über die Austalisch muschelgattung Hyridella. Archiv für Molluskenkunde 52:119-121.

Ortmann, A.E. 1920. Correlation of shape and station in freshwater mussels. Proceedings of the American Philosophical Society 59(4):269-312.

Ortmann, A.E. 1921. Marsupium und glochidium der südamerikanischen muscheln aus der Unterfamilie der Hyriinae. Archiv für Molluskenkunde 53:102-111.

Ortmann, A.E. 1921. South American naiades; a contribution to the knowledge of the fresh-water mussels of South America. Memoirs of the Carnegie Museum 8(3):451-670, 34-48 pls.

Ortmann, A.E. 1921. The anatomy of certain mussels from the Upper Tennessee. Nautilus 34(3):81-91.

Ortmann, A.E. 1921. A new locality for Arkansia wheeleri Ortmann & Walker. Nautilus 34(4):141.

Ortmann, A.E. 1921. Some Central American species of naiades, belonging or allied to the genus Elliptio. Nautilus 35(1):24-27.

Ortmann, A.E. 1923. The anatomy and taxonomy of certain Unioninae and Anodontinae from the Gulf Drainage. Nautilus 36(3):73-84, 36(4):129-132.

Ortmann, A.E. 1923. Notes on the anatomy and taxonomy of certain Lampsilinae from the Gulf Drainage. Nautilus 37(2):56-60.

Ortmann, A.E. 1924. The naiad-fauna of Duck River in Tennessee. American Midland Naturalist 9(1):18-62.

Ortmann, A.E. 1924. Distributional features of naiades in tributaries of Lake Erie. American Midland Naturalist 9(3):101-117.

Ortmann, A.E. 1924. Notes on the anatomy and taxonomy of certain Lampsilinae from the Gulf Drainage. (cont.). Nautilus 37(3):99-105, 37(4):137-144.

Ortmann, A.E. 1924. Mussel Shoals. Science 60(1564):565-566.

Ortmann, A.E. 1925. The naiad-fauna of the Tennessee River system below Walden Gorge. American Midland Naturalist 9(8):321-372.

Ortmann, A.E. 1926. The naiades of the Green River drainage in Kentucky. Annals of the Carnegie Museum 17(1):167-188 + 1 plate.

Ortmann, A.E. 1926. Unionidae from the Reelfoot Lake Region in west Tennessee. Nautilus 39(3):87-94.

Ortmann, A.E., and B. Walker 1912. A new North American naiad. Nautilus 25(9):97-100 + 1 plate.

Ortmann, A.E., and B. Walker 1922. A new genus and species of American naiades. Nautilus 36(1):1-6 + 1 plate.

Ortmann, A.E., and B. Walker. 1922. On the nomenclature of certain North American naiades. Occasional Papers of the Museum of Zoology, University of Michigan No. 112. 75 pp.