American Alpine Club
The American Alpine Journal is available on-line via a full text index search at www.americanalpineclub.org/aajsearch
and to browse at
Alpine Club of Canada
The Canadian Alpine Journal is not available on-line but can be purchased on DVD from the club at /www.alpineclubofcanada.ca/store/index.html
The Himalayan Club has a wealth of interesting material on-line including recent articles and index for the Himalayan Journal.