- Issaquah - Thumbnail History (historylink.org)
Issaquah, located east of Lake Washington along Interstate-90, has experienced two periods of rapid growth during its lengthy history. The first came in the late nineteenth century when the local economy was fueled by the coal, lumber, hop growing, and dairy industries. During the mid-twentieth century the town became somewhat dormant, then once again saw vast development. In 2003, the city was listed as the fastest growing community in the state of Washington.
- Geology of the Snoqualmie Batholith (washingtonminerals.com)
Snoqualmie Batholith - late Oligocene to early Miocene (28 Ma[million years ago] to 22 Ma). Uplift and erosion of the Old Cascade Volcanic Arc exposed plutonic rock of the Snoqualmie Batholith near Snoqualmie Pass between Interstate 90 and State Highway 2. The batholith consists of at least eight intrusive phases, emplaced at a depth of about 4,000 and 8,000 feet. Intrusive rock types found within the Snoqualmie Batholith range in composition from granite to gabbro. Granodiorite is the most prevalent rock type, making up about 80 percent the batholith (Erikson, 1969). Other lithologies within the batholith include porphyritic dacite, andesite, aplite, and intrusive breccia (Livingston, 1971).
- Interstate 90 (Wikipedia)
Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,021 miles (4,862 km). It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and the Northeast, ending in Boston, Massachusetts. The highway serves 13 states and has 16 auxiliary routes, primarily in major cities such as Chicago, Cleveland, Buffalo, and Rochester.
- I-90 Wildlife Watch (i90wildlifewatch.org)
I-90 Wildlife Watch is a citizen-based wildlife monitoring project that invites motorists to report wildlife sightings along Interstate 90 (I-90) in the Snoqualmie Pass region of Washington.
