Dr. Ida P. Rolf was the founder of Structural Integration.
In 1920 she earned her Ph.D.
In the 1930's, unsatisfied with the available medical treatment, Dr. Rolf explored Osteopathy, Chiropractic Medicine, Yoga, the Alexander Technique, and Korzybski's work on the consciousness.
By the 1940's, she had developed and experienced many breakthroughs with the work she did
Since then, Dr. Rolf further refined her technique and training program.
Graduates have extensive knowledge in anatomy, physiology, body awareness, and a sensitivity to psychological mediation.
There are several schools now that conduct the training of Dr. Rolf's work and are involved in research to enhance the understanding of gravity's relationship to the human structure.
Three of the most well known schools teaching the Rolf Method of Structural Integration are;
Guild for Structural Integration (http://www.rolfguild.org)
Tom Myers (http://www.anatomytrains.com)
Rolf Institute (http://www.rolf.org)
You can find a Rolfer in your area by going to these web sites. Most of the graduates from these schools have been trained by original students of Ida Rolf. It's usually best to look for someone with a fair amount of experience.