Here is a list of resources I've compiled from various reliable sources (I wish I had when my daughter was diagnosed):
http://www.sarcomacancer.ca/
http://www.theinsideride.com/
http://www.curesearch.org/
http://sarcomacancer.ca/aboutus.php
http://www.sarctrials.org/public/pag61.aspx
http://www.cancercare.on.ca/cms/One.aspx?portalId=1377&pageId=10348
http://info.cancer.ca/cce-ecc/SearchResults.aspx?Lang=E&lf=sarcoma
http://www.curesarcoma.org/
http://clinicaltrials.mayo.edu/should.cfm
http://www.emergingmed.com/
http://www.cancer.org/docroot/subsite/hopelodge/locations.asp
http://www.acor.org
http://www.asco.org
www.beatsarcoma.org
http://cancerguide.org
http://cureourchildren.org
http://www.sarcomahelp.org/
http://www.sarcomaalliance.org/main.shtml
http://www.coasttocoastagainstcancer.org/
http://www.sarcomacancer.ca/
http://www.theinsideride.com/
http://www.curesearch.org/
http://sarcomacancer.ca/aboutus.php
http://www.sarctrials.org/public/pag61.aspx
http://www.cancercare.on.ca/cms/One.aspx?portalId=1377&pageId=10348
http://info.cancer.ca/cce-ecc/SearchResults.aspx?Lang=E&lf=sarcoma
http://www.curesarcoma.org/
http://clinicaltrials.mayo.edu/should.cfm
http://www.emergingmed.com/
http://www.cancer.org/docroot/subsite/hopelodge/locations.asp
http://www.acor.org
http://www.asco.org
www.beatsarcoma.org
http://cancerguide.org
http://cureourchildren.org
http://www.sarcomahelp.org/
http://www.sarcomaalliance.org/main.shtml
http://www.coasttocoastagainstcancer.org/