Seven Summits list of mountains, climbers:
http://www.everestnews.com/seven.htm
http://www.7summits.com/

Publications:
Climbing
Rock & Ice

Mt. Everest:
Mt. Everest News
Mt. Everest History/Facts
Himalaya News
MountainZone.com
History of Mt. Everest expeditions, National Geographic

Mt. McKinley:
Denali National Park and Preserve
Alaska Tour & Travel
National Park Service, U.S.

Aconcagua:
Aconcagua

Elbrus:
Russian climbing organization
Caucasus Mountains

Vinson:
Alpine Ascents International

Kilimanjaro:
Kilimanjaro Adventure Travel
Tanzania Tourist Site
Tanzania High Commission
Kilimanjaro National Park

Kosciuszko:
Virtual Australia
National Parks and Wildlife Services, Australia

Training Summit Links:
Cotopaxi travel site
Ecuador travel site
The Best of Ecuador
Mt. Rainier National Park
World's volcano pictures
World IQ list of volcanoes