found: Work cat: Peterson, Jeffrey A. Gray-tailed vole population responses to inbreeding and environmental stress, 1996:page 10 (gray-tailed vole, Microtus canicaudus, the common grassland vole of the Willamette Valley in Oregon)
found: Wikipedia, June 30, 2020:Gray-tailed vole article (gray-tailed vole (Microtus canicaudus) also known as the gray-tailed meadow vole or gray-tailed meadow mouse, is a rodent in the genus Microtus of the family Cricetidae. Subfamily Arvicolinae; genus Microtus; subgenus Mynomes. It is endemic to the Willamette Valley, Oregon, and Clark County, Washington.)
found: ITIS, viewed June 30, 2020:webpage for Microtus canicaudus (Microtus canicaudus Miller, 1897); common name: Gray-tailed vole. Current standing: valid. Species: Microtus canicaudus Miller, 1897, gray-tailed vole)