"GlacierWorks". www.glacierworks.org. Retrieved 19 April 2018.
outsideonline.com
Eric Simonson, Jochen Hemmleb, and Larry Johnson. "Outside Online Archives". OutsideOnline.com. Archived from the original on 8 January 2009. Retrieved 30 April 2009.{{cite web}}: CS1 maint: multiple names: authors list (link)
Eric Simonson, Jochen Hemmleb, and Larry Johnson. "Outside Online Archives". OutsideOnline.com. Archived from the original on 8 January 2009. Retrieved 30 April 2009.{{cite web}}: CS1 maint: multiple names: authors list (link)