Order Soricomorpha Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 220 311 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Sorex trowbridgii subsp. trowbridgii Baird 1857 Sorex trowbridgii subsp. trowbridgii Baird 1857 , Mammalia , in: Repts. U. S. Expl. Surv., Vol. 8, 1: 13 . Type Locality: USA , "Astoria [mouth of the Columbia River, Clatsop Co.], Oregon ".