Relationship between Dewey Larson and Don/Carla

[greyWiz]

Hi, I was reading the preface of Dewey Larson's The Universe of Motion, when I've found this statement at the very end:

It will not be feasible to acknowledge all of the many individual contributions that have been made toward developing the details of thc theoretical system and bringing it to the attention of the scientific community. However, I will say that I am particularly indebted to the founders of the New Science Advocates, Dr. Douglas S. Cramer, Dr. Paul F. de Lespinasse, and Dr. George W. Hancock; to Dr. Frank A, Anderson, the current President of the NSA, who did the copy editing for this volume, along with his many other contributions; and to the past and present members of the NSA Executive Board: Steven Berline, RonaId F. Blackburn, Frances Boldereff, James N. Brown, Jr., Lawrence Denslow, Donald T. Elkins, Rainer Huck, Todd Kelso, Richard L. Long, Frank H. Meyer, William J. Mitchell, Harold Norris, Carla Rueckert, Ronald W. Satz, George Windolph, and Hans F. Wuenscher.

Here's the link:
http://www.reciprocalsystem.com/nbm/nbm00pre.htm

I guess this book is from 1979, so what was the relationship between Dewey, Don and Carla at that time, in order to cite them in the acknowledgments?

Is there a chance of Dewey being influenced by Don and Carla's works?

Thanks in advance!