J.B. Ellis, B.M. Everhart, and E. Bartholomew [1501-5100, plus extras]

Purdue University, Kriebel Herbarium
Catalog #: PUL00018529
J Dearness s.n.
Peronospora halstedii Farlow
Canada, Ontario, London;

Cornell University, Plant Pathology Herbarium
Catalog #: F.Columbiani-0132d
J. Dearness s.n.
Peronospora halstedii Farlow
Canada, Ontario, London;

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0031977
J. Dearness #s.n.
Plasmopara halstedii Fungi Columb. #132d
Canada, Ontario, London;