Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

Brown University - Algae
Catalog #: ABRU00003651
W. A. Setchell s.n.
Spirogyra affinis (Hassall) Petit
United States, Alaska, near Iliuliuk, Unalaska, AK

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00147760
4463e8b7-933e-4f4c-b633-07e64f78a325
W. A. Setchell; A. A. Lawson #s.n. 00 July 1899
Spirogyra affinis (Hassall) Petit
United States, Alaska, near Iliuliuk, Unalaska

University of Michigan
Catalog #: 736592
W.A. Setchell #s.n. 00 July 1899
Spirogyra affinis (Hassall) Petit
United States, Alaska, Iluliuk, Unalaska

Michigan State University Algae
Catalog #: MSC0184744
W.A. Setchell #s.n. 00 July 1899
Spirogyra affinis (Hassall) Petit
United States, Alaska, Near Illiliuk

Miami University - Algae
Catalog #: 000187931
W.A. Setchell #s.n. 00 July 1899
Spirogyra affinis (Hassall) Petit
United States, Alaska, Iluliuk, Unalaska

Yale University Herbarium
Catalog #: YU.092042
William Albert Setchell s.n. 00 July 1899
Spirogyra affinis (Hassall) Petit
United States, Alaska, Unalaska; near Iliuliuk, Unalaska, AK