- The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~2.6 million years.
- In this article, Cordilleran ice sheet is not capitalized. On other articles, it is capitalized as Cordilleran Ice Sheet. This site uses the full capitalization.
- Gamma Persei (stars.astro.illinois.edu)
GAMMA PER (Gamma Persei). The naming of stars at times seems to have little to do with their brightnesses. All the first magnitude stars, and most of the second magnitude visible from classical lands, have names (an outstanding exception being Gamma Cassiopeiae), but from there on the naming is erratic.