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

Brown University - Algae
Catalog #: ABRU00002525
I. Holden s.n. 26 July 1892
Oscillatoria princeps Vaucher ex Gomont
United States, Connecticut, Parrott's Pond, Bridgeport, CT

Miami University - Algae
Catalog #: 000186402
I. Holden #s.n. 26 July 1892
Oscillatoria princeps Vaucher ex Gomont
United States, Connecticut, Fairfield, Parrott's Pond, Bridgeport

Yale University Herbarium
Catalog #: YU.091081
Isaac Holden s.n. 26 July 1892
Oscillatoria princeps Vaucher ex Gomont
United States, Connecticut, Bridgeport; Parrott's Pond, Bridgeport, CT

Michigan State University Algae
Catalog #: MSC0183866
Isaac Holden #s.n. 26 July 1892
Oscillatoria princeps Vaucher ex Gomont
United States, Connecticut, Fairfield, Parrott's Pond, Bridgeport