GENERAL DISTRIBUTION:
White fir occurs from Oregon in the Blue Mountains and southern Cascade range, south throughout California and into the San Pedro de Mátir in northern Baja, California; west through parts of southern Idaho, to Wyoming; and south throughout the Colorado Plateau and southern Rocky Mountains in Utah and Colorado, and into the isolated mountain ranges of southern Arizona, New Mexico and northern Mexico [145,309]. U.S. Geological Survey provides a distributional map for white fir.
Rocky Mountain white fir occurs in the mountains of central and southern Colorado to southeast Idaho and eastern Nevada, south to southeastern California and southern Arizona and New Mexico, with localized populations in northwest Mexico [191]. It is only sparingly distributed in the mountains of the eastern Mojave Desert in California [186]. Rocky Mountain white fir is common on the eastern rim of the Great Basin, with the central Great Basin forming a 200-mile gap between the two varieties of white fir [185].
California white fir occurs primarily in the Sierra Nevada, Klamath and Siskiyou mountains of California, and in western Nevada on the eastern slopes of the Sierra [102]. Some report its distribution into the mountains of southwest Oregon south to northern Baja [191], while others report that in the ranges of southern California and northern Baja, white fir more closely resembles the Rocky Mountain variety [316].
It is planted in rural and urban landscapes across the northern and northeastern United States [185,202], and distribution maps include it in Maine and Massachusetts [309].
http://www.fs.fed.us/database/feis/plants/tree/abicon/distribution_and_occurrence.html
I tried looking it up in a field guide but I still couldn't figure it out. I'm sure with the wealth of knowledge here someone will be able to help me 
