ペール・アクセル・リュードベリ
1922: Flora of the Rocky Mountains and adjacent plains, Colorado, Utah, Wyoming, Idaho, Montana, Saskatchewan, Alberta, and neighboring parts of Nebraska, South Dakota, North Dakota, and British Columbia
1918: Monograph on Rosa
1923: Flora of the Black Hills of South Dakota
1923: Memories from the Department of Botany of Columbia University
1932: Flora of the Prairies and Plains of Central North America with M. A. Howe