- This report from 1973 describes the geology of southern Snohomish County.
- The map area includes eighty-five square miles in South Snohomish County southeast of Everett, bounded on the west by Interstate 5, on the south by Highway 405 and the Snohomish-King County boundary, on the east and north by the Snohomish River floodplain.
- Delta Crucis (stars.astro.illinois.edu)
DELTA CRU (Delta Crucis). Overwhelmed by its neighbors in Crux, one of the most famous constellations of the sky, and fourth brightest in the 4-star pattern, Delta Crucis is the only one with no proper name (though given that Alpha Crucis is called “Acrux” and Gamma Crucis “Gacrux,” no one would likely object to “Delcrux.”)