1913 17 p., 13 figs, 6 pls, roy. 4to, disbound (no covers). Published in: Denkschriften der Kaiserlichen Akademie der Wissenschaften (Wien).
1896 251 p., 12 (double) partly tinted lithographed pls, roy 4to, disbound (no covers). Nova Acta. Abh. der Kaserl. Leop.-Carol. Deutschen Akademie der Naturforscher. Unopened copy.
1887 104 p., 10 (1 double-page) pls, disbound. Published in: Zool. Jahrbücher. Abt. f. Systematik.
1888 xiv, 260 p., 274 figs, 12 pls, cloth. Library stamps (Zoologisch Museum Amsterdam). Partly loose. A few small, marginal worm holes. Working copy only.
1896 251 p., 12 (double) partly tinted lithographed pls, roy 4to, hcalf. Nova Acta. Abh. der Kaserl. Leop.-Carol. Deutschen Akademie der Naturforscher. Library stamps (Zoologisch Museum Amsterdam). Well bound in half leather.
1910-1915 3 volumes in 4 (complete). 259, 63, 397 p., 48, 8, 109 pls, roy 4to, green hcloth (no label on spine). Library stamps (Zoologisch Museum Amsterdam). In volume three a few plates loose. This is the complete Sponge part of the ''Reports of the Scientific Results of the Expedition to the Eastern Tropical Tropical Pacific, in Charge of Alexander Agassiz, by the U.S. Fish Commission Steamer ''Albatros''.
1903 xv, 168 p., 44 figs, hcloth (front cover loose, spine missing). Library stamps. Working copy only.