I assume that I got copy of this because I was involved in the revision of NE AAPM Constitution in 1975.  I assume, that this constitution was created so the NE-AAPM Chapter could have a representative on the Board of Directors of the National AAPM.  Ted Webster of was President of the National AAPM at this time.  The constitution formalized the activities of the Boston Medical Physics Group.  The Boston Medical Physics Group was a monthly seminar that met at the MIT Faculty Club monthly on Wednesdays.  My understanding is that the seminar topics were wide ranging, i.e., beyond radiological sciences.