This edited book contains a number of previously published articles that go to form 'The Historical Basis of Body Psychotherapy'. 
There are short extracts of longer articles from Barbara Goodrich-Dunn & Elliot Gould, Ulfried Geuter, Nick Totton and a synopsis of a longer seminar article by David Boadella.  Full articles on the history of Body Psychotherapy are published from Bernd Eiden, David Boadella (on the work of Pierre Janet); and then a series of seven full-length articles on the history and development of Body Psychotherapy by Courtenay Young.  There is another historical essay - a currently unpublished article on the relationship between Wilhelm Reich and Else Lindenberg - also by Courtenay Young. And a concluding article, summarising the present political situation with respect to psychotherapy (and Body Psychotherapy), especially with reference to Europe: link here.